diff --git a/README.md b/README.md
index 37cc122a9..290101abd 100644
--- a/README.md
+++ b/README.md
@@ -34,8 +34,8 @@ Zen is a firefox-based browser with the aim of pushing your productivity to a ne
 
 ### Firefox Versions
 
-- [`Release`](https://zen-browser.app/download) - Is currently built using Firefox version `152.0.1`! 🚀
-- [`Twilight`](https://zen-browser.app/download?twilight) - Is currently built using Firefox version `RC 152.0.1`!
+- [`Release`](https://zen-browser.app/download) - Is currently built using Firefox version `152.0.4`! 🚀
+- [`Twilight`](https://zen-browser.app/download?twilight) - Is currently built using Firefox version `RC 152.0.4`!
 
 ### Contributing
 
diff --git a/build/firefox-cache/l10n-last-commit-hash b/build/firefox-cache/l10n-last-commit-hash
index 3ee1d9289..0d260214c 100644
--- a/build/firefox-cache/l10n-last-commit-hash
+++ b/build/firefox-cache/l10n-last-commit-hash
@@ -1 +1 @@
-2960f4c1ce58d289d3b9ec885695f0017d2636ab
\ No newline at end of file
+3985a970489e32fc751e1b80abf4d5534c905e45
\ No newline at end of file
diff --git a/locales/en-US/browser/browser/zen-folders.ftl b/locales/en-US/browser/browser/zen-folders.ftl
index 93180f314..266b12ee7 100644
--- a/locales/en-US/browser/browser/zen-folders.ftl
+++ b/locales/en-US/browser/browser/zen-folders.ftl
@@ -6,13 +6,13 @@ zen-folders-search-placeholder =
     .placeholder = Search { $folder-name }...
 
 zen-folders-panel-rename-folder =
-    .label = Rename Folder
+    .label = Rename Folder…
 
 zen-folders-panel-unpack-folder =
     .label = Unpack Folder
 
 zen-folders-new-subfolder =
-    .label = New Subfolder
+    .label = New Subfolder…
 
 zen-folders-panel-delete-folder =
     .label = Delete Folder
@@ -21,7 +21,7 @@ zen-folders-panel-convert-folder-to-space =
     .label = Convert folder to Space
 
 zen-folders-panel-change-folder-space =
-    .label = Change Space...
+    .label = Change Space
 
 zen-folders-unload-all-tooltip =
     .tooltiptext = Unload active in this folder
diff --git a/locales/en-US/browser/browser/zen-general.ftl b/locales/en-US/browser/browser/zen-general.ftl
index d1229b04f..cf6c3b95b 100644
--- a/locales/en-US/browser/browser/zen-general.ftl
+++ b/locales/en-US/browser/browser/zen-general.ftl
@@ -19,17 +19,23 @@ tab-context-zen-add-essential-badge = { $num } / { $max }
 tab-context-zen-remove-essential =
     .label = Remove from Essentials
     .accesskey = R
-tab-context-zen-replace-pinned-url-with-current =
+tab-context-zen-edit-pinned-page =
     .label =
         { $isEssential ->
-            [true] Replace Essential URL with Current
-           *[false] Replace Pinned URL with Current
+            [true] Edit Essential URL
+           *[false] Edit Pinned URL
         }
+    .accesskey = P
+tab-context-zen-replace-pinned-url-with-current =
+    .label = Replace with Current URL
     .accesskey = C
+tab-context-zen-edit-pinned-url =
+    .label = Edit…
+    .accesskey = E
 tab-context-zen-edit-title =
-    .label = Change Label...
+    .label = Change Label…
 tab-context-zen-edit-icon =
-    .label = Change Icon...
+    .label = Change Icon…
 
 zen-themes-corrupted = Your { -brand-short-name } mods file is corrupted. They have been reset to the default theme.
 zen-shortcuts-corrupted = Your { -brand-short-name } shortcuts file is corrupted. They have been reset to the default shortcuts.
@@ -55,6 +61,10 @@ zen-general-confirm =
     .label = Confirm
 
 zen-pinned-tab-replaced = Pinned tab URL has been replaced with the current URL!
+zen-pinned-tab-url-edited = Pinned tab URL has been updated!
+zen-pinned-tab-url-invalid = That doesn't look like a valid URL.
+zen-pinned-tab-edit-url-title = Edit Pinned URL
+zen-pinned-tab-edit-url-label = Enter the URL this pinned tab should point to:
 zen-tabs-renamed = Tab has been successfully renamed!
 zen-background-tab-opened-toast = New background tab opened!
 zen-workspace-renamed-toast = Workspace has been successfully renamed!
diff --git a/locales/en-US/browser/browser/zen-space-routing.ftl b/locales/en-US/browser/browser/zen-space-routing.ftl
index a960e8895..4c070b968 100644
--- a/locales/en-US/browser/browser/zen-space-routing.ftl
+++ b/locales/en-US/browser/browser/zen-space-routing.ftl
@@ -25,3 +25,9 @@ zen-space-routing-open-in = Open In
 zen-space-routing-url = URL
 
 zen-space-routing-tab-routed-toast = New tab opened in { $targetWorkspace }
+tab-context-zen-add-domain-to-sr = 
+    .label = 
+        { $tabCount ->
+            [one] Add Route for Domain
+            *[other] Add Route for Domains
+        }
diff --git a/locales/en-US/browser/browser/zen-vertical-tabs.ftl b/locales/en-US/browser/browser/zen-vertical-tabs.ftl
index 73e4a2a03..bd34127ea 100644
--- a/locales/en-US/browser/browser/zen-vertical-tabs.ftl
+++ b/locales/en-US/browser/browser/zen-vertical-tabs.ftl
@@ -20,7 +20,7 @@ zen-toolbar-context-compact-mode-hide-both =
     .accesskey = H
 
 zen-toolbar-context-move-to-folder =
-    .label = Move to Folder...
+    .label = Move to Folder
     .accesskey = M
 
 zen-toolbar-context-new-folder =
@@ -31,7 +31,7 @@ sidebar-zen-expand =
   .label = Expand Sidebar
 
 sidebar-zen-create-new =
-  .label = Create New...
+  .label = Create New
 
 tabbrowser-unload-tab-button =
 .tooltiptext =
diff --git a/locales/en-US/browser/browser/zen-workspaces.ftl b/locales/en-US/browser/browser/zen-workspaces.ftl
index d57b1e0da..c29549776 100644
--- a/locales/en-US/browser/browser/zen-workspaces.ftl
+++ b/locales/en-US/browser/browser/zen-workspaces.ftl
@@ -24,10 +24,10 @@ zen-workspaces-panel-context-delete =
     .accesskey = D
 
 zen-workspaces-panel-change-name =
-    .label = Change Name
+    .label = Change Name…
 
 zen-workspaces-panel-change-icon =
-    .label = Change Icon
+    .label = Change Icon…
 
 zen-workspaces-panel-context-default-profile =
     .label = Set Profile
@@ -42,7 +42,7 @@ zen-workspaces-how-to-reorder-title = How to reorder spaces
 zen-workspaces-how-to-reorder-desc = Drag the space icons at the bottom of the sidebar to reorder them
 
 zen-workspaces-change-theme =
-    .label = Edit Theme
+    .label = Edit Theme…
 
 zen-workspaces-panel-context-open =
     .label = Open Workspace
@@ -72,7 +72,7 @@ zen-workspace-creation-name =
     .placeholder = Space Name
 
 zen-move-tab-to-workspace-button =
-    .label = Move To...
+    .label = Move To
     .tooltiptext = Move all tabs in this window to a Space
 
 zen-workspaces-panel-context-reorder =
diff --git a/prefs/firefox/ai.yaml b/prefs/firefox/ai.yaml
index a89b6a439..be0d93fc8 100644
--- a/prefs/firefox/ai.yaml
+++ b/prefs/firefox/ai.yaml
@@ -23,3 +23,6 @@
 
 - name: browser.ml.linkPreview.enabled
   value: false
+
+- name: browser.preferences.aiControls
+  value: false
diff --git a/src/browser/base/content/aboutDialog-css.patch b/src/browser/base/content/aboutDialog-css.patch
new file mode 100644
index 000000000..af9814c85
--- /dev/null
+++ b/src/browser/base/content/aboutDialog-css.patch
@@ -0,0 +1,18 @@
+diff --git a/browser/base/content/aboutDialog.css b/browser/base/content/aboutDialog.css
+index 017125bc2510e5f5e317a5e78c40d6aa9ded76ca..d343d8c62a2251e3c3a33ae8f2ab9c4c68218c22 100644
+--- a/browser/base/content/aboutDialog.css
++++ b/browser/base/content/aboutDialog.css
+@@ -135,6 +135,13 @@
+   margin: 0 40px;
+ }
+ 
++#trademark {
++  font-size: xx-small;
++  text-align: center;
++  margin-block: 10px;
++  color: var(--text-color-deemphasized);
++}
++
+ #currentChannel {
+   margin: 0;
+   padding: 0;
diff --git a/src/browser/base/content/aboutDialog-xhtml.patch b/src/browser/base/content/aboutDialog-xhtml.patch
index 333a28ed3..3665d002a 100644
--- a/src/browser/base/content/aboutDialog-xhtml.patch
+++ b/src/browser/base/content/aboutDialog-xhtml.patch
@@ -1,5 +1,5 @@
 diff --git a/browser/base/content/aboutDialog.xhtml b/browser/base/content/aboutDialog.xhtml
-index 3ffd464b960a4299a7dd0cd87e4fc2f781b9d593..ef9f42d1f0196902b4af31f4496891fcd6319831 100644
+index 3ffd464b960a4299a7dd0cd87e4fc2f781b9d593..7a831c8ee2b73bb89bf8a82ac24958b55c16a5aa 100644
 --- a/browser/base/content/aboutDialog.xhtml
 +++ b/browser/base/content/aboutDialog.xhtml
 @@ -102,10 +102,6 @@
@@ -39,8 +39,8 @@ index 3ffd464b960a4299a7dd0cd87e4fc2f781b9d593..ef9f42d1f0196902b4af31f4496891fc
          <label is="text-link" class="bottom-link" useoriginprincipal="true" href="about:license" data-l10n-id="bottomLinks-license"/>
 -        <label is="text-link" class="bottom-link" href="https://www.mozilla.org/about/legal/terms/firefox/" data-l10n-id="bottom-links-terms"/>
 -        <label is="text-link" class="bottom-link" href="https://www.mozilla.org/privacy/firefox/?utm_source=firefox-browser&#38;utm_medium=firefox-desktop&#38;utm_campaign=about-dialog" data-l10n-id="bottom-links-privacy"/>
-+        <label is="text-link" class="bottom-link" href="about:rights" data-l10n-id="bottomLinks-rights"/>
-+        <label is="text-link" class="bottom-link" href="https://www.zen-browser.app/privacy-policy/" data-l10n-id="bottomLinks-privacy"/>
++        <label is="text-link" class="bottom-link" href="about:rights" data-l10n-id="bottom-links-terms"/>
++        <label is="text-link" class="bottom-link" href="https://www.zen-browser.app/privacy-policy/" data-l10n-id="bottom-links-privacy"/>
        </hbox>
        <description id="trademark" data-l10n-id="trademarkInfo"></description>
      </vbox>
diff --git a/src/browser/base/content/zen-commands.inc.xhtml b/src/browser/base/content/zen-commands.inc.xhtml
index 770e7dacf..6c6adc7d7 100644
--- a/src/browser/base/content/zen-commands.inc.xhtml
+++ b/src/browser/base/content/zen-commands.inc.xhtml
@@ -35,6 +35,7 @@
   <command id="cmd_zenToggleTabsOnRight" />
 
   <command id="cmd_zenReplacePinnedUrlWithCurrent" />
+  <command id="cmd_zenEditPinnedUrl" />
   <command id="cmd_contextZenAddToEssentials" />
   <command id="cmd_contextZenRemoveFromEssentials" />
 
diff --git a/src/browser/components/preferences/preferences-js.patch b/src/browser/components/preferences/preferences-js.patch
index 95f557a56..4aa64e88f 100644
--- a/src/browser/components/preferences/preferences-js.patch
+++ b/src/browser/components/preferences/preferences-js.patch
@@ -10,7 +10,7 @@ index 57add34d876fb885275f1147209c6fbeee367a7c..be0ab43b299317c0022a5e719f47a070
        ],
        resizeCallback: async ({ title, frame }) => {
          // Search within main document and highlight matched keyword.
-@@ -437,6 +438,8 @@ const CONFIG_PANES = Object.freeze({
+@@ -437,6 +437,8 @@ const CONFIG_PANES = Object.freeze({
    tabsBrowsing: {
      l10nId: "tabs-browsing-section",
      groupIds: [
diff --git a/src/browser/components/tabbrowser/content/tabbrowser-js.patch b/src/browser/components/tabbrowser/content/tabbrowser-js.patch
index 3fb2d5bd7..006b24ec7 100644
--- a/src/browser/components/tabbrowser/content/tabbrowser-js.patch
+++ b/src/browser/components/tabbrowser/content/tabbrowser-js.patch
@@ -1,5 +1,5 @@
 diff --git a/browser/components/tabbrowser/content/tabbrowser.js b/browser/components/tabbrowser/content/tabbrowser.js
-index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f3682852f8a52bd 100644
+index 08b5b56e069d038d72c87355920c4ce8a55ed805..209c0ddc0297adb8340180c58de07ae107790751 100644
 --- a/browser/components/tabbrowser/content/tabbrowser.js
 +++ b/browser/components/tabbrowser/content/tabbrowser.js
 @@ -511,6 +511,7 @@
@@ -109,7 +109,13 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        tab.linkedPanel = uniqueId;
        this._selectedTab = tab;
        this._selectedBrowser = browser;
-@@ -1131,13 +1192,18 @@
+@@ -1126,18 +1187,24 @@
+       aTab,
+       { telemetrySource = this.TabMetrics.METRIC_SOURCE.UNKNOWN } = {}
+     ) {
++      aTab = gZenGlanceManager.getTabOrGlanceParent(aTab);
+       if (aTab.pinned || aTab == FirefoxViewHandler.tab) {
+         return;
        }
  
        this.showTab(aTab);
@@ -129,7 +135,13 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
        aTab.setAttribute("pinned", "true");
        this._updateTabBarForPinnedTabs();
-@@ -1150,11 +1216,19 @@
+@@ -1145,16 +1212,25 @@
+     }
+ 
+     unpinTab(aTab) {
++      aTab = gZenGlanceManager.getTabOrGlanceParent(aTab);
+       if (!aTab.pinned) {
+         return;
        }
  
        this.#handleTabMove(aTab, () => {
@@ -150,7 +162,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        });
  
        aTab.style.marginInlineStart = "";
-@@ -1369,6 +1443,9 @@
+@@ -1369,6 +1445,9 @@
  
        let LOCAL_PROTOCOLS = ["chrome:", "about:", "resource:", "data:"];
  
@@ -160,7 +172,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        if (
          aIconURL &&
          !LOCAL_PROTOCOLS.some(protocol => aIconURL.startsWith(protocol))
-@@ -1378,6 +1455,9 @@
+@@ -1378,6 +1457,9 @@
          );
          return;
        }
@@ -170,7 +182,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
        let browser = this.getBrowserForTab(aTab);
        browser.mIconURL = aIconURL;
-@@ -1700,7 +1780,6 @@
+@@ -1700,7 +1782,6 @@
  
        // Preview mode should not reset the owner
        if (!this._previewMode && !oldTab.selected) {
@@ -178,7 +190,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        }
  
        let lastRelatedTab = this._lastRelatedTabMap.get(oldTab);
-@@ -1791,6 +1870,7 @@
+@@ -1791,6 +1872,7 @@
        if (!this._previewMode) {
          newTab.recordTimeFromUnloadToReload();
          newTab.updateLastAccessed();
@@ -186,7 +198,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          oldTab.updateLastAccessed();
          // if this is the foreground window, update the last-seen timestamps.
          if (this.documentGlobal == BrowserWindowTracker.getTopWindow()) {
-@@ -2005,6 +2085,9 @@
+@@ -2005,6 +2087,9 @@
        }
  
        let activeEl = document.activeElement;
@@ -196,7 +208,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        // If focus is on the old tab, move it to the new tab.
        if (activeEl == oldTab) {
          newTab.focus();
-@@ -2043,7 +2126,7 @@
+@@ -2043,7 +2128,7 @@
        // Focus the location bar if it was previously focused for that tab.
        // In full screen mode, only bother making the location bar visible
        // if the tab is a blank one.
@@ -205,7 +217,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          let selectURL = () => {
            if (this._asyncTabSwitching) {
              // Set _awaitingSetURI flag to suppress popup notification
-@@ -2331,7 +2414,12 @@
+@@ -2331,7 +2416,12 @@
        return this._setTabLabel(aTab, aLabel);
      }
  
@@ -219,7 +231,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        if (!aLabel || (isURL && /^about:reader\?url=/.test(aLabel))) {
          return false;
        }
-@@ -2457,7 +2545,7 @@
+@@ -2457,7 +2547,7 @@
          newIndex = this.selectedTab._tPos + 1;
        }
  
@@ -228,7 +240,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          if (this.isTabGroupLabel(targetTab)) {
            throw new Error(
              "Replacing a tab group label with a tab is not supported"
-@@ -2737,6 +2825,7 @@
+@@ -2737,6 +2827,7 @@
        uriIsAboutBlank,
        userContextId,
        skipLoad,
@@ -236,7 +248,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
      } = {}) {
        let b = document.createXULElement("browser");
        // Use the JSM global to create the permanentKey, so that if the
-@@ -2810,8 +2899,7 @@
+@@ -2810,8 +2901,7 @@
          // we use a different attribute name for this?
          b.setAttribute("name", name);
        }
@@ -246,7 +258,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          b.setAttribute("transparent", "true");
        }
  
-@@ -2981,7 +3069,7 @@
+@@ -2981,7 +3071,7 @@
  
        let panel = this.getPanel(browser);
        let uniqueId = this._generateUniquePanelID();
@@ -255,7 +267,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        aTab.linkedPanel = uniqueId;
  
        // Inject the <browser> into the DOM if necessary.
-@@ -3041,8 +3129,8 @@
+@@ -3041,8 +3131,8 @@
        // If we transitioned from one browser to two browsers, we need to set
        // hasSiblings=false on both the existing browser and the new browser.
        if (this.tabs.length == 2) {
@@ -266,7 +278,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        } else {
          aTab.linkedBrowser.browsingContext.hasSiblings = this.tabs.length > 1;
        }
-@@ -3227,7 +3315,6 @@
+@@ -3227,7 +3317,6 @@
              this.selectedTab = this.addTrustedTab(BROWSER_NEW_TAB_URL, {
                tabIndex: tab._tPos + 1,
                userContextId: tab.userContextId,
@@ -274,7 +286,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
                focusUrlBar: true,
              });
              resolve(this.selectedBrowser);
-@@ -3337,6 +3424,10 @@
+@@ -3337,6 +3426,10 @@
          schemelessInput,
          hasValidUserGestureActivation = false,
          textDirectiveUserActivation = false,
@@ -285,7 +297,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        } = {}
      ) {
        // all callers of addTab that pass a params object need to pass
-@@ -3347,10 +3438,25 @@
+@@ -3347,10 +3440,25 @@
          );
        }
  
@@ -311,7 +323,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        // If we're opening a foreground tab, set the owner by default.
        ownerTab ??= inBackground ? null : this.selectedTab;
  
-@@ -3358,6 +3464,7 @@
+@@ -3358,6 +3466,7 @@
        if (this.selectedTab.owner) {
          this.selectedTab.owner = null;
        }
@@ -319,7 +331,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
        // Find the tab that opened this one, if any. This is used for
        // determining positioning, and inherited attributes such as the
-@@ -3410,6 +3517,22 @@
+@@ -3410,6 +3519,22 @@
            noInitialLabel,
            skipBackgroundNotify,
          });
@@ -342,7 +354,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          if (insertTab) {
            // Insert the tab into the tab container in the correct position.
            this.#insertTabAtIndex(t, {
-@@ -3418,6 +3541,7 @@
+@@ -3418,6 +3543,7 @@
              ownerTab,
              openerTab,
              pinned,
@@ -350,7 +362,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
              bulkOrderedOpen,
              tabGroup: tabGroup ?? openerTab?.group,
            });
-@@ -3436,6 +3560,7 @@
+@@ -3436,6 +3562,7 @@
            openWindowInfo,
            skipLoad,
            triggeringRemoteType,
@@ -358,7 +370,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          }));
  
          if (focusUrlBar) {
-@@ -3560,6 +3685,12 @@
+@@ -3560,6 +3687,12 @@
          }
        }
  
@@ -371,7 +383,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        // Additionally send pinned tab events
        if (pinned) {
          this.#notifyPinnedStatus(t);
-@@ -3570,6 +3701,15 @@
+@@ -3570,6 +3703,15 @@
        if (!inBackground) {
          this.selectedTab = t;
        }
@@ -387,7 +399,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        return t;
      }
  
-@@ -3802,6 +3942,7 @@
+@@ -3802,6 +3944,7 @@
          isAdoptingGroup = false,
          isUserTriggered = false,
          telemetryUserCreateSource = "unknown",
@@ -395,7 +407,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        } = {}
      ) {
        if (
-@@ -3812,9 +3953,6 @@
+@@ -3812,9 +3955,6 @@
              !this.isSplitViewWrapper(tabOrSplitView)
          )
        ) {
@@ -405,7 +417,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        }
  
        if (!color) {
-@@ -3835,9 +3973,14 @@
+@@ -3835,9 +3975,14 @@
          label,
          isAdoptingGroup
        );
@@ -422,7 +434,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        );
        group.addTabs(tabsAndSplitViews);
  
-@@ -3958,7 +4101,7 @@
+@@ -3958,7 +4103,7 @@
        }
  
        this.#handleTabMove(tab, () =>
@@ -431,7 +443,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        );
      }
  
-@@ -4044,6 +4187,7 @@
+@@ -4044,6 +4189,7 @@
          color: group.color,
          insertBefore: newTabs[0],
          isAdoptingGroup: true,
@@ -439,7 +451,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        });
      }
  
-@@ -4254,6 +4398,7 @@
+@@ -4254,6 +4400,7 @@
          openWindowInfo,
          skipLoad,
          triggeringRemoteType,
@@ -447,7 +459,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        }
      ) {
        // If we don't have a preferred remote type (or it is `NOT_REMOTE`), and
-@@ -4323,6 +4468,7 @@
+@@ -4323,6 +4470,7 @@
            openWindowInfo,
            name,
            skipLoad,
@@ -455,7 +467,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          });
        }
  
-@@ -4536,9 +4682,9 @@
+@@ -4536,9 +4684,9 @@
          }
  
          // Add a new tab if needed.
@@ -467,7 +479,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
            let url = "about:blank";
            if (tabData.entries?.length) {
-@@ -4575,8 +4721,10 @@
+@@ -4575,8 +4723,10 @@
              insertTab: false,
              skipLoad: true,
              preferredRemoteType,
@@ -479,7 +491,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
            if (select) {
              tabToSelect = tab;
            }
-@@ -4598,7 +4746,8 @@
+@@ -4598,7 +4748,8 @@
            this.pinTab(tab);
            // Then ensure all the tab open/pinning information is sent.
            this._fireTabOpen(tab, {});
@@ -489,7 +501,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
            let { groupId } = tabData;
            const tabGroup = tabGroupWorkingData.get(groupId);
            // if a tab refers to a tab group we don't know, skip any group
-@@ -4618,7 +4767,10 @@
+@@ -4618,7 +4769,10 @@
                  tabGroup.stateData.id,
                  tabGroup.stateData.color,
                  tabGroup.stateData.collapsed,
@@ -501,7 +513,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
                );
                tabsFragment.appendChild(tabGroup.node);
              }
-@@ -4673,9 +4825,21 @@
+@@ -4673,9 +4827,21 @@
        // to remove the old selected tab.
        if (tabToSelect) {
          let leftoverTab = this.selectedTab;
@@ -523,12 +535,15 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
        if (tabs.length > 1 || !tabs[0].selected) {
          this._updateTabsAfterInsert();
-@@ -4866,11 +5030,14 @@
+@@ -4866,11 +5032,17 @@
        if (ownerTab) {
          tab.owner = ownerTab;
        }
 +      if ((!tab.pinned && tabGroup?.isZenFolder && !Services.prefs.getBoolPref('zen.folders.owned-tabs-in-folder')) || (tabGroup && tabGroup.hasAttribute("split-view-group"))) {
 +        tabGroup = null;
++      }
++      if (openerTab?.hasAttribute("zen-glance-tab")) {
++        openerTab = gZenGlanceManager.getTabOrGlanceParent(openerTab);
 +      }
  
        // Ensure we have an index if one was not provided.
@@ -539,7 +554,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          if (
            !bulkOrderedOpen &&
            ((openerTab &&
-@@ -4882,7 +5049,7 @@
+@@ -4882,7 +5054,7 @@
            let lastRelatedTab =
              openerTab && this._lastRelatedTabMap.get(openerTab);
            let previousTab = lastRelatedTab || openerTab || this.selectedTab;
@@ -548,7 +563,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
              tabGroup = previousTab.group;
            }
            if (
-@@ -4898,7 +5065,7 @@
+@@ -4898,7 +5070,7 @@
                  previousTab.splitview
                ) + 1;
            } else if (previousTab.visible) {
@@ -557,7 +572,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
            } else if (previousTab == FirefoxViewHandler.tab) {
              elementIndex = 0;
            }
-@@ -4926,14 +5093,14 @@
+@@ -4926,14 +5098,14 @@
        }
        // Ensure index is within bounds.
        if (tab.pinned) {
@@ -576,7 +591,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
        if (pinned && !itemAfter?.pinned) {
          itemAfter = null;
-@@ -4950,7 +5117,7 @@
+@@ -4950,7 +5122,7 @@
  
        this.tabContainer._invalidateCachedTabs();
  
@@ -585,7 +600,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          if (
            (this.isTab(itemAfter) && itemAfter.group == tabGroup) ||
            this.isSplitViewWrapper(itemAfter)
-@@ -4981,7 +5148,11 @@
+@@ -4981,7 +5153,11 @@
          const tabContainer = pinned
            ? this.tabContainer.pinnedTabsContainer
            : this.tabContainer;
@@ -597,7 +612,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        }
  
        if (tab.group?.collapsed) {
-@@ -4996,6 +5167,7 @@
+@@ -4996,6 +5172,7 @@
        if (pinned) {
          this._updateTabBarForPinnedTabs();
        }
@@ -605,7 +620,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
        TabBarVisibility.update();
      }
-@@ -5544,6 +5716,7 @@
+@@ -5544,6 +5721,7 @@
          telemetrySource,
        } = {}
      ) {
@@ -613,7 +628,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        // When 'closeWindowWithLastTab' pref is enabled, closing all tabs
        // can be considered equivalent to closing the window.
        if (
-@@ -5633,6 +5806,7 @@
+@@ -5633,6 +5811,7 @@
          if (lastToClose) {
            this.removeTab(lastToClose, aParams);
          }
@@ -621,7 +636,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        } catch (e) {
          console.error(e);
        }
-@@ -5678,6 +5852,14 @@
+@@ -5678,6 +5857,14 @@
          return;
        }
  
@@ -636,7 +651,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        let isVisibleTab = aTab.visible;
        // We have to sample the tab width now, since _beginRemoveTab might
        // end up modifying the DOM in such a way that aTab gets a new
-@@ -5685,6 +5867,9 @@
+@@ -5685,6 +5872,9 @@
        // state).
        let tabWidth = window.windowUtils.getBoundsWithoutFlushing(aTab).width;
        let isLastTab = this.#isLastTabInWindow(aTab);
@@ -646,7 +661,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        if (
          !this._beginRemoveTab(aTab, {
            closeWindowFastpath: true,
-@@ -5696,13 +5881,14 @@
+@@ -5696,13 +5886,14 @@
            telemetrySource,
          })
        ) {
@@ -662,7 +677,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        let lockTabSizing =
          !this.tabContainer.verticalMode &&
          !aTab.pinned &&
-@@ -5733,7 +5919,13 @@
+@@ -5733,7 +5924,13 @@
          // We're not animating, so we can cancel the animation stopwatch.
          Glean.browserTabclose.timeAnim.cancel(aTab._closeTimeAnimTimerId);
          aTab._closeTimeAnimTimerId = null;
@@ -677,7 +692,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          return;
        }
  
-@@ -5867,7 +6059,7 @@
+@@ -5867,7 +6064,7 @@
            closeWindowWithLastTab != null
              ? closeWindowWithLastTab
              : !window.toolbar.visible ||
@@ -686,7 +701,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
          if (closeWindow) {
            // We've already called beforeunload on all the relevant tabs if we get here,
-@@ -5891,6 +6083,7 @@
+@@ -5891,6 +6088,7 @@
  
          newTab = true;
        }
@@ -694,7 +709,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        aTab._endRemoveArgs = [closeWindow, newTab];
  
        // swapBrowsersAndCloseOther will take care of closing the window without animation.
-@@ -5931,13 +6124,7 @@
+@@ -5931,13 +6129,7 @@
        aTab._mouseleave();
  
        if (newTab) {
@@ -709,7 +724,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        } else {
          TabBarVisibility.update();
        }
-@@ -6070,6 +6257,7 @@
+@@ -6070,6 +6262,7 @@
          this.tabs[i]._tPos = i;
        }
  
@@ -717,7 +732,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        if (!this._windowIsClosing) {
          // update tab close buttons state
          this.tabContainer._updateCloseButtons();
-@@ -6255,6 +6443,7 @@
+@@ -6255,6 +6448,7 @@
          memory_after: await getTotalMemoryUsage(),
          time_to_unload_in_ms: timeElapsed,
        });
@@ -725,7 +740,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
      }
  
      /**
-@@ -6300,6 +6489,7 @@
+@@ -6300,6 +6494,7 @@
        }
  
        let excludeTabs = new Set(aExcludeTabs);
@@ -733,7 +748,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
        // If this tab has a successor, it should be selectable, since
        // hiding or closing a tab removes that tab as a successor.
-@@ -6312,15 +6502,22 @@
+@@ -6312,15 +6507,22 @@
          !excludeTabs.has(aTab.owner) &&
          Services.prefs.getBoolPref("browser.tabs.selectOwnerOnClose")
        ) {
@@ -758,7 +773,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        let tab = this.tabContainer.findNextTab(aTab, {
          direction: 1,
          filter: _tab => remainingTabs.includes(_tab),
-@@ -6334,7 +6531,7 @@
+@@ -6334,7 +6536,7 @@
        }
  
        if (tab) {
@@ -767,7 +782,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        }
  
        // If no qualifying visible tab was found, see if there is a tab in
-@@ -6355,7 +6552,7 @@
+@@ -6355,7 +6557,7 @@
          });
        }
  
@@ -776,7 +791,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
      }
  
      _blurTab(aTab) {
-@@ -6366,7 +6563,7 @@
+@@ -6366,7 +6568,7 @@
       * @returns {boolean}
       *   False if swapping isn't permitted, true otherwise.
       */
@@ -785,7 +800,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        // Do not allow transfering a private tab to a non-private window
        // and vice versa.
        if (
-@@ -6420,6 +6617,7 @@
+@@ -6420,6 +6622,7 @@
        // fire the beforeunload event in the process.  Close the other
        // window if this was its last tab.
        if (
@@ -793,7 +808,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          !remoteBrowser._beginRemoveTab(aOtherTab, {
            adoptedByTab: aOurTab,
            closeWindowWithLastTab: true,
-@@ -6431,7 +6629,7 @@
+@@ -6431,7 +6634,7 @@
        // If this is the last tab of the window, hide the window
        // immediately without animation before the docshell swap, to avoid
        // about:blank being painted.
@@ -802,7 +817,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        if (closeWindow) {
          let win = aOtherTab.documentGlobal;
          win.windowUtils.suppressAnimation(true);
-@@ -6565,11 +6763,13 @@
+@@ -6565,11 +6768,13 @@
        }
  
        // Finish tearing down the tab that's going away.
@@ -816,7 +831,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
        this.setTabTitle(aOurTab);
  
-@@ -6771,10 +6971,10 @@
+@@ -6771,10 +6976,10 @@
        SessionStore.deleteCustomTabValue(aTab, "hiddenBy");
      }
  
@@ -829,7 +844,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          aTab.selected ||
          aTab.closing ||
          // Tabs that are sharing the screen, microphone or camera cannot be hidden.
-@@ -6834,7 +7034,8 @@
+@@ -6834,7 +7039,8 @@
       * @param {object} [aOptions={}]
       *   Key-value pairs that will be serialized into the features string.
       */
@@ -839,7 +854,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        if (this.tabs.length == 1) {
          return null;
        }
-@@ -6851,7 +7052,7 @@
+@@ -6851,7 +7057,7 @@
        // tell a new window to take the "dropped" tab
        let args = Cc["@mozilla.org/array;1"].createInstance(Ci.nsIMutableArray);
        args.appendElement(aTab.splitview ?? aTab);
@@ -848,7 +863,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          private: PrivateBrowsingUtils.isWindowPrivate(window),
          features: Object.entries(aOptions)
            .map(([key, value]) => `${key}=${value}`)
-@@ -6859,6 +7060,8 @@
+@@ -6859,6 +7065,8 @@
          openerWindow: window,
          args,
        });
@@ -857,7 +872,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
      }
  
      /**
-@@ -6971,7 +7174,7 @@
+@@ -6971,7 +7179,7 @@
       *   `true` if element is a `<tab-group>`
       */
      isTabGroup(element) {
@@ -866,7 +881,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
      }
  
      /**
-@@ -7056,8 +7259,8 @@
+@@ -7056,8 +7264,8 @@
        }
  
        // Don't allow mixing pinned and unpinned tabs.
@@ -877,7 +892,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        } else {
          tabIndex = Math.max(tabIndex, this.pinnedTabCount);
        }
-@@ -7103,8 +7306,8 @@
+@@ -7103,8 +7311,8 @@
        this.#handleTabMove(
          element,
          () => {
@@ -888,7 +903,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
              neighbor = neighbor.group;
            }
            if (neighbor?.splitview) {
-@@ -7115,6 +7318,12 @@
+@@ -7115,6 +7323,12 @@
                return;
              }
            }
@@ -901,7 +916,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
            if (movingForwards && neighbor) {
              neighbor.after(element);
-@@ -7173,23 +7382,31 @@
+@@ -7173,23 +7387,31 @@
      #moveTabNextTo(element, targetElement, moveBefore = false, metricsContext) {
        if (this.isTabGroupLabel(targetElement)) {
          targetElement = targetElement.group;
@@ -939,7 +954,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        } else if (!element.pinned && targetElement && targetElement.pinned) {
          // If the caller asks to move an unpinned element next to a pinned
          // tab, move the unpinned element to be the first unpinned element
-@@ -7202,12 +7419,35 @@
+@@ -7202,12 +7424,35 @@
          //    move the tab group right before the first unpinned tab.
          // 4. Moving a tab group and the first unpinned tab is grouped:
          //    move the tab group right before the first unpinned tab's tab group.
@@ -976,7 +991,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
        // We want to include the splitview wrapper if it's the targetElement, but
        // not in the case where we want to reverse tabs within the same splitview.
-@@ -7216,6 +7456,7 @@
+@@ -7216,6 +7461,7 @@
        }
  
        let getContainer = () =>
@@ -984,7 +999,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          element.pinned
            ? this.tabContainer.pinnedTabsContainer
            : this.tabContainer;
-@@ -7224,11 +7465,15 @@
+@@ -7224,11 +7470,15 @@
          element,
          () => {
            if (moveBefore) {
@@ -1001,7 +1016,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
            }
          },
          metricsContext
-@@ -7302,11 +7547,15 @@
+@@ -7302,11 +7552,15 @@
       * @param {TabMetricsContext} [metricsContext]
       */
      moveTabToExistingGroup(aTab, aGroup, metricsContext) {
@@ -1020,7 +1035,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        }
        if (aTab.group && aTab.group.id === aGroup.id) {
          return;
-@@ -7378,6 +7627,7 @@
+@@ -7378,6 +7632,7 @@
  
        let state = {
          tabIndex: tab._tPos,
@@ -1028,7 +1043,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        };
        if (tab.visible) {
          state.elementIndex = tab.elementIndex;
-@@ -7409,7 +7659,7 @@
+@@ -7409,7 +7664,7 @@
        let changedSplitView =
          previousTabState.splitViewId != currentTabState.splitViewId;
  
@@ -1037,7 +1052,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          tab.dispatchEvent(
            new CustomEvent("TabMove", {
              bubbles: true,
-@@ -7456,6 +7706,10 @@
+@@ -7456,6 +7711,10 @@
  
        moveActionCallback();
  
@@ -1048,7 +1063,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        // Clear tabs cache after moving nodes because the order of tabs may have
        // changed.
        this.tabContainer._invalidateCachedTabs();
-@@ -7506,7 +7760,22 @@
+@@ -7506,7 +7765,22 @@
       * @returns {object}
       *    The new tab in the current window, null if the tab couldn't be adopted.
       */
@@ -1072,7 +1087,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        // Swap the dropped tab with a new one we create and then close
        // it in the other window (making it seem to have moved between
        // windows). We also ensure that the tab we create to swap into has
-@@ -7549,6 +7818,8 @@
+@@ -7549,6 +7823,8 @@
        }
        params.skipLoad = true;
        let newTab = this.addWebTab("about:blank", params);
@@ -1081,7 +1096,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
        aTab.container.tabDragAndDrop.finishAnimateTabMove();
  
-@@ -8259,7 +8530,7 @@
+@@ -8259,7 +8535,7 @@
          // preventDefault(). It will still raise the window if appropriate.
          return;
        }
@@ -1090,7 +1105,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        window.focus();
        aEvent.preventDefault();
      }
-@@ -8276,7 +8547,6 @@
+@@ -8276,7 +8552,6 @@
  
      on_TabGroupCollapse(aEvent) {
        aEvent.target.tabs.forEach(tab => {
@@ -1098,7 +1113,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
        });
      }
  
-@@ -8630,7 +8900,9 @@
+@@ -8630,7 +8905,9 @@
  
          let filter = this._tabFilters.get(tab);
          if (filter) {
@@ -1108,7 +1123,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
  
            let listener = this._tabListeners.get(tab);
            if (listener) {
-@@ -9435,6 +9707,7 @@
+@@ -9435,6 +9712,7 @@
              aWebProgress.isTopLevel
            ) {
              this.mTab.setAttribute("busy", "true");
@@ -1116,7 +1131,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
              gBrowser._tabAttrModified(this.mTab, ["busy"]);
              this.mTab._notselectedsinceload = !this.mTab.selected;
            }
-@@ -9515,6 +9788,7 @@
+@@ -9515,6 +9793,7 @@
          // known defaults. Note we use the original URL since about:newtab
          // redirects to a prerendered page.
          const shouldRemoveFavicon =
@@ -1124,7 +1139,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
            !this.mBrowser.mIconURL &&
            !ignoreBlank &&
            !(originalLocation.spec in FAVICON_DEFAULTS);
-@@ -9689,13 +9963,6 @@
+@@ -9689,13 +9968,6 @@
              this.mBrowser.originalURI = aRequest.originalURI;
            }
  
@@ -1138,7 +1153,7 @@ index 08b5b56e069d038d72c87355920c4ce8a55ed805..555ffd4772d9d4903491fdff9f368285
          }
  
          let userContextId = this.mBrowser.getAttribute("usercontextid") || 0;
-@@ -10587,7 +10854,8 @@ var TabContextMenu = {
+@@ -10587,7 +10859,8 @@ var TabContextMenu = {
      );
      contextUnpinSelectedTabs.hidden =
        !this.contextTab.pinned || !this.multiselected;
diff --git a/src/browser/components/urlbar/UrlbarUtils-sys-mjs.patch b/src/browser/components/urlbar/UrlbarUtils-sys-mjs.patch
index 00a3df9e5..3b3dd4315 100644
--- a/src/browser/components/urlbar/UrlbarUtils-sys-mjs.patch
+++ b/src/browser/components/urlbar/UrlbarUtils-sys-mjs.patch
@@ -1,9 +1,9 @@
 diff --git a/browser/components/urlbar/UrlbarUtils.sys.mjs b/browser/components/urlbar/UrlbarUtils.sys.mjs
-index 2f03bdf632c6ca15c728df2801162da5159682da..6834daede8cb11854f137602100183d85a930686 100644
+index aa7c67f2bfaa3f15d592a14b527a8721dfc9bc6f..d2fe012796ea3a5be05090a732011b3cf92b78be 100644
 --- a/browser/components/urlbar/UrlbarUtils.sys.mjs
 +++ b/browser/components/urlbar/UrlbarUtils.sys.mjs
-@@ -109,6 +109,8 @@ export var UrlbarUtils = {
-     RESTRICT_SEARCH_KEYWORD: "restrictSearchKeyword",
+@@ -110,6 +110,8 @@ export var UrlbarUtils = {
+     SEMANTIC_HISTORY: "semanticHistory",
      SUGGESTED_INDEX: "suggestedIndex",
      TAIL_SUGGESTION: "tailSuggestion",
 +    ZEN_ACTION: "zenAction",
@@ -11,7 +11,7 @@ index 2f03bdf632c6ca15c728df2801162da5159682da..6834daede8cb11854f137602100183d8
    }),
  
    // Defines provider types.
-@@ -170,6 +172,8 @@ export var UrlbarUtils = {
+@@ -171,6 +173,8 @@ export var UrlbarUtils = {
      OTHER_NETWORK: 6,
      ADDON: 7,
      ACTIONS: 8,
@@ -20,7 +20,7 @@ index 2f03bdf632c6ca15c728df2801162da5159682da..6834daede8cb11854f137602100183d8
    }),
  
    // Per-result exposure telemetry.
-@@ -319,6 +323,14 @@ export var UrlbarUtils = {
+@@ -320,6 +324,14 @@ export var UrlbarUtils = {
          telemetryLabel: "actions",
          uiLabel: "urlbar-searchmode-actions2",
        },
@@ -35,7 +35,7 @@ index 2f03bdf632c6ca15c728df2801162da5159682da..6834daede8cb11854f137602100183d8
      ]);
    },
  
-@@ -611,6 +623,12 @@ export var UrlbarUtils = {
+@@ -612,6 +624,12 @@ export var UrlbarUtils = {
            return this.RESULT_GROUP.HEURISTIC_FALLBACK;
          case "UrlbarProviderHistoryUrlHeuristic":
            return this.RESULT_GROUP.HEURISTIC_HISTORY_URL;
diff --git a/src/browser/themes/shared/preferences/zen-preferences.css b/src/browser/themes/shared/preferences/zen-preferences.css
index a69de7283..852e7be0f 100644
--- a/src/browser/themes/shared/preferences/zen-preferences.css
+++ b/src/browser/themes/shared/preferences/zen-preferences.css
@@ -486,8 +486,6 @@ groupbox h2 {
 #tabGroupSuggestions,
 #web-appearance-manage-themes-link,
 #setting-control-sidebarChatbotFieldset,
-#aiControlsDescription,
-#category-ai-features,
 #setting-control-supportFirefox,
 .mission-message,
 html|setting-group:is([data-subcategory="layout"], [groupid="support"]) {
diff --git a/src/zen/ZenComponents.manifest b/src/zen/ZenComponents.manifest
index 5cfcfd855..db0c69a49 100644
--- a/src/zen/ZenComponents.manifest
+++ b/src/zen/ZenComponents.manifest
@@ -16,3 +16,4 @@ category app-startup nsBrowserGlue @mozilla.org/browser/browserglue;1 applicatio
 #include common/Components.manifest
 #include sessionstore/SessionComponents.manifest
 #include live-folders/LiveFoldersComponents.manifest
+#include space-routing/SpaceRoutingComponents.manifest
diff --git a/src/zen/common/emojis/ZenEmojiPicker.mjs b/src/zen/common/emojis/ZenEmojiPicker.mjs
index cf651e23c..97b2c1cce 100644
--- a/src/zen/common/emojis/ZenEmojiPicker.mjs
+++ b/src/zen/common/emojis/ZenEmojiPicker.mjs
@@ -6,29 +6,29 @@ import { nsZenDOMOperatedFeature } from "chrome://browser/content/zen-components
 
 // prettier-ignore
 const SVG_ICONS = [
-    "airplane.svg", "american-football.svg", "baseball.svg", "basket.svg", 
-    "bed.svg", "bell.svg", "bookmark.svg", "book.svg", 
-    "briefcase.svg", "brush.svg", "bug.svg", "build.svg", 
-    "cafe.svg", "call.svg", "card.svg", "chat.svg", 
-    "checkbox.svg", "circle.svg", "cloud.svg", "code.svg", 
-    "coins.svg", "construct.svg", "cutlery.svg", "egg.svg", 
-    "extension-puzzle.svg", "eye.svg", "fast-food.svg", "fish.svg", 
-    "flag.svg", "flame.svg", "flask.svg", "folder.svg", 
-    "game-controller.svg", "globe-1.svg", "globe.svg", "grid-2x2.svg", 
-    "grid-3x3.svg", "heart.svg", "ice-cream.svg", "image.svg", 
-    "inbox.svg", "key.svg", "layers.svg", "leaf.svg", 
-    "lightning.svg", "location.svg", "lock-closed.svg", "logo-rss.svg", 
-    "logo-usd.svg", "mail.svg", "map.svg", "megaphone.svg", 
-    "moon.svg", "music.svg", "navigate.svg", "nuclear.svg", 
-    "page.svg", "palette.svg", "paw.svg", "people.svg", 
-    "pizza.svg", "planet.svg", "present.svg", "rocket.svg", 
-    "school.svg", "shapes.svg", "shirt.svg", "skull.svg", 
-    "squares.svg", "square.svg", "star-1.svg", "star.svg", 
-    "stats-chart.svg", "sun.svg", "tada.svg", "terminal.svg", 
-    "ticket.svg", "time.svg", "trash.svg", "triangle.svg", 
-    "video.svg", "volume-high.svg", "wallet.svg", "warning.svg", 
-    "water.svg", "weight.svg", 
-  ];
+  "airplane.svg", "american-football.svg", "baseball.svg", "basket.svg",
+  "bed.svg", "bell.svg", "bookmark.svg", "book.svg",
+  "briefcase.svg", "brush.svg", "bug.svg", "build.svg",
+  "cafe.svg", "call.svg", "card.svg", "chat.svg",
+  "checkbox.svg", "circle.svg", "cloud.svg", "code.svg",
+  "coins.svg", "construct.svg", "cutlery.svg", "egg.svg",
+  "extension-puzzle.svg", "eye.svg", "fast-food.svg", "fish.svg",
+  "flag.svg", "flame.svg", "flask.svg", "folder.svg",
+  "game-controller.svg", "globe-1.svg", "globe.svg", "grid-2x2.svg",
+  "grid-3x3.svg", "heart.svg", "ice-cream.svg", "image.svg",
+  "inbox.svg", "key.svg", "layers.svg", "leaf.svg",
+  "lightning.svg", "location.svg", "lock-closed.svg", "logo-rss.svg",
+  "logo-usd.svg", "mail.svg", "map.svg", "megaphone.svg",
+  "moon.svg", "music.svg", "navigate.svg", "nuclear.svg",
+  "page.svg", "palette.svg", "paw.svg", "people.svg",
+  "pizza.svg", "planet.svg", "present.svg", "rocket.svg",
+  "school.svg", "shapes.svg", "shirt.svg", "skull.svg",
+  "squares.svg", "square.svg", "star-1.svg", "star.svg",
+  "stats-chart.svg", "sun.svg", "tada.svg", "terminal.svg",
+  "ticket.svg", "time.svg", "trash.svg", "triangle.svg",
+  "video.svg", "volume-high.svg", "wallet.svg", "warning.svg",
+  "water.svg", "weight.svg",
+];
 
 class nsZenEmojiPicker extends nsZenDOMOperatedFeature {
   #panel;
@@ -47,6 +47,7 @@ class nsZenEmojiPicker extends nsZenDOMOperatedFeature {
   init() {
     this.#panel = document.getElementById("PanelUI-zen-emojis-picker");
     this.#panel.addEventListener("popupshowing", this);
+    this.#panel.addEventListener("popupshown", this);
     this.#panel.addEventListener("popuphidden", this);
     this.#panel.addEventListener("command", this);
     this.searchInput.addEventListener("input", this);
@@ -57,6 +58,9 @@ class nsZenEmojiPicker extends nsZenDOMOperatedFeature {
       case "popupshowing":
         this.#onPopupShowing(event);
         break;
+      case "popupshown":
+        this.#onPopupShown(event);
+        break;
       case "popuphidden":
         this.#onPopupHidden(event);
         break;
@@ -103,17 +107,20 @@ class nsZenEmojiPicker extends nsZenDOMOperatedFeature {
     return document.getElementById("PanelUI-zen-emojis-picker-search");
   }
 
-  #changePage(toSvg = false) {
+  #changePage(toSvg = false, { animate = true } = {}) {
+    const pages = document.getElementById("PanelUI-zen-emojis-picker-pages");
     const itemToScroll = toSvg
       ? this.svgList
-      : document
-          .getElementById("PanelUI-zen-emojis-picker-pages")
-          .querySelector('[emojis="true"]');
-    itemToScroll.scrollIntoView({
-      behavior: "smooth",
-      block: "nearest",
-      inline: "start",
-    });
+      : pages.querySelector('[emojis="true"]');
+    if (animate) {
+      itemToScroll.scrollIntoView({
+        behavior: "smooth",
+        block: "nearest",
+        inline: "start",
+      });
+    } else {
+      pages.scrollLeft = toSvg ? itemToScroll.offsetLeft : 0;
+    }
     const button = document.getElementById(
       `PanelUI-zen-emojis-picker-change-${toSvg ? "svg" : "emojis"}`
     );
@@ -180,9 +187,6 @@ class nsZenEmojiPicker extends nsZenDOMOperatedFeature {
         });
         emojiList.appendChild(item);
       }
-      setTimeout(() => {
-        this.searchInput.focus();
-      }, 500);
     }
     const svgList = this.svgList;
     for (const icon of SVG_ICONS) {
@@ -199,14 +203,23 @@ class nsZenEmojiPicker extends nsZenDOMOperatedFeature {
     }
   }
 
+  #onPopupShown(event) {
+    if (event.target !== this.#panel) {
+      return;
+    }
+    const allowEmojis = !this.#panel.hasAttribute("only-svg-icons");
+    if (allowEmojis) {
+      this.searchInput.focus({ preventScroll: true });
+    }
+    this.#changePage(false, { animate: false });
+  }
+
   #onPopupHidden(event) {
     if (event.target !== this.#panel) {
       return;
     }
     this.#clearEmojis();
 
-    this.#changePage(false);
-
     const emojiList = this.emojiList;
     emojiList.innerHTML = "";
 
diff --git a/src/zen/common/modules/ZenUIManager.mjs b/src/zen/common/modules/ZenUIManager.mjs
index 5f257fcf6..13434de29 100644
--- a/src/zen/common/modules/ZenUIManager.mjs
+++ b/src/zen/common/modules/ZenUIManager.mjs
@@ -1579,6 +1579,7 @@ window.gZenVerticalTabsManager = {
           overflowElements.appendChild(child);
         } else {
           const element = document.getElementById("page-action-buttons");
+          child.setAttribute("context", "toolbar-context-menu");
           element.before(child);
         }
         return;
@@ -1612,7 +1613,9 @@ window.gZenVerticalTabsManager = {
         // it will reset to the original name anyway
         if (hasChanged || (this._tabEdited.zenStaticLabel && newName)) {
           this._tabEdited.zenStaticLabel = newName;
-          gBrowser._setTabLabel(this._tabEdited, newName);
+          gBrowser._setTabLabel(this._tabEdited, newName, {
+            _zenChangeLabelFlag: true,
+          });
           gZenUIManager.showToast("zen-tabs-renamed");
         } else {
           delete this._tabEdited.zenStaticLabel;
@@ -1708,7 +1711,8 @@ window.gZenVerticalTabsManager = {
       this._tabEdited.after(input);
     }
     input.focus();
-    input.select();
+    input.setSelectionRange(0, input.value.length, "backward");
+    input.scrollLeft = 0;
 
     input.addEventListener("blur", this._renameTabHalt);
   },
diff --git a/src/zen/common/sys/ui/ZenSpaceRoutingNavigation.sys.mjs b/src/zen/common/sys/ui/ZenSpaceRoutingNavigation.sys.mjs
index ce0fef437..8715d07c4 100644
--- a/src/zen/common/sys/ui/ZenSpaceRoutingNavigation.sys.mjs
+++ b/src/zen/common/sys/ui/ZenSpaceRoutingNavigation.sys.mjs
@@ -35,13 +35,6 @@ export class ZenSpaceRoutingNavigation extends ZenUIComponent {
       return;
     }
 
-    // The tab we spawn for a route must be allowed to load once without being
-    // redirected again, regardless of when its workspace attribute lands.
-    if (aBrowser._zenSkipNavRouteOnce) {
-      aBrowser._zenSkipNavRouteOnce = false;
-      return;
-    }
-
     let uri;
     try {
       uri = aRequest.QueryInterface(Ci.nsIChannel).URI;
@@ -80,16 +73,49 @@ export class ZenSpaceRoutingNavigation extends ZenUIComponent {
     }
 
     const currentWorkspaceId = tab.getAttribute("zen-workspace-id");
-    if (
-      !win.gZenSpaceRoutingManager.shouldRedirectNavigation(
+    const targetWorkspaceId =
+      win.gZenSpaceRoutingManager.getRedirectTargetWorkspaceId(
         uri.spec,
         currentWorkspaceId,
         win
-      )
-    ) {
+      );
+    if (!targetWorkspaceId) {
       return;
     }
 
+    // A brand-new tab whose very first real navigation this is (a
+    // target="_blank" link, window.open(), or a freshly opened tab) is still
+    // showing its initial about:blank document. There is nothing to preserve,
+    // so rather than cancelling the load and spawning a duplicate tab - which
+    // would leave this one behind empty - just move this very tab into the
+    // destination space and let the in-flight load finish in place.
+    const isInitialDocument =
+      aBrowser.browsingContext?.currentWindowGlobal?.isInitialDocument ?? false;
+    if (isInitialDocument) {
+      const wasSelected = tab.selected;
+      // Defer so we don't mutate the tab strip from inside a progress notification.
+      win.setTimeout(() => {
+        if (!tab.isConnected) {
+          return;
+        }
+        gBrowser.selectedTab = tab.owner;
+        win.gZenWorkspaces.moveTabToWorkspace(tab, targetWorkspaceId);
+        if (wasSelected) {
+          const targetWorkspace =
+            win.gZenWorkspaces.getWorkspaceFromId(targetWorkspaceId);
+          if (targetWorkspace) {
+            win.gZenWorkspaces.lastSelectedWorkspaceTabs[targetWorkspaceId] =
+              tab;
+            win.gZenWorkspaces.changeWorkspace(targetWorkspace);
+          }
+        }
+      }, 0);
+      return;
+    }
+
+    // An already-loaded page is navigating in place. Preserve it in its current
+    // tab and re-open the destination in a new routed tab instead.
+    //
     // Under Fission the parent-side aRequest is a RemoteWebProgress stand-in
     // whose cancel()/loadInfo throw NS_ERROR_NOT_IMPLEMENTED (the real channel
     // lives in the content process). Stop the in-place load through the browser,
@@ -111,13 +137,14 @@ export class ZenSpaceRoutingNavigation extends ZenUIComponent {
 
     // Defer so we don't mutate the tab strip from inside a progress notification.
     win.setTimeout(() => {
-      const newTab = gBrowser.addTab(urlToOpen, {
+      gBrowser.addTab(urlToOpen, {
         triggeringPrincipal: principal,
         ownerTab: tab.isConnected ? tab : null,
+        // The user was actively navigating this tab, so follow the navigation
+        // into the routed tab instead of opening it in the background (addTab
+        // defaults inBackground to true).
+        inBackground: false,
       });
-      if (newTab?.linkedBrowser) {
-        newTab.linkedBrowser._zenSkipNavRouteOnce = true;
-      }
     }, 0);
   }
 }
diff --git a/src/zen/common/zen-sets.js b/src/zen/common/zen-sets.js
index 1595bfe90..5d4bc9cc9 100644
--- a/src/zen/common/zen-sets.js
+++ b/src/zen/common/zen-sets.js
@@ -78,6 +78,9 @@ document.addEventListener(
           case "cmd_zenReplacePinnedUrlWithCurrent":
             gZenPinnedTabManager.replacePinnedUrlWithCurrent();
             break;
+          case "cmd_zenEditPinnedUrl":
+            gZenPinnedTabManager.editPinnedUrl();
+            break;
           case "cmd_contextZenAddToEssentials":
             gZenPinnedTabManager.addToEssentials();
             break;
@@ -112,7 +115,9 @@ document.addEventListener(
             });
             break;
           case "cmd_zenTogglePinTab": {
-            const currentTab = gBrowser.selectedTab;
+            const currentTab = gZenGlanceManager.getTabOrGlanceParent(
+              gBrowser.selectedTab
+            );
             if (currentTab && !currentTab.hasAttribute("zen-empty-tab")) {
               if (currentTab.pinned) {
                 gBrowser.unpinTab(currentTab);
diff --git a/src/zen/compact-mode/sidebar.inc.css b/src/zen/compact-mode/sidebar.inc.css
index a9604e455..dce38ff44 100644
--- a/src/zen/compact-mode/sidebar.inc.css
+++ b/src/zen/compact-mode/sidebar.inc.css
@@ -51,6 +51,10 @@
     --zen-toolbox-max-width: 74px !important;
     --zen-compact-float: var(--zen-element-separation);
 
+    @media (-moz-mac-tahoe-theme) {
+      --zen-compact-mode-no-padding-radius-fix: -2px;
+    }
+
     :root[zen-no-padding='true'] & {
       --zen-compact-float: 10px;
       --zen-compact-top-toolbar-hidden-fix: var(--zen-compact-float);
diff --git a/src/zen/glance/ZenGlanceManager.mjs b/src/zen/glance/ZenGlanceManager.mjs
index affc555c2..c5f503059 100644
--- a/src/zen/glance/ZenGlanceManager.mjs
+++ b/src/zen/glance/ZenGlanceManager.mjs
@@ -53,6 +53,10 @@ class nsZenGlanceManager extends nsZenDOMOperatedFeature {
   #setupEventListeners() {
     window.addEventListener("TabClose", this.onTabClose.bind(this));
     window.addEventListener("TabSelect", this.onLocationChange.bind(this));
+    window.addEventListener(
+      "MozDOMFullscreen:Entered",
+      this.onFullscreenEntered.bind(this)
+    );
 
     document
       .getElementById("tabbrowser-tabpanels")
@@ -81,8 +85,7 @@ class nsZenGlanceManager extends nsZenDOMOperatedFeature {
     menuitem.addEventListener("command", () =>
       this.openGlance({
         url: gContextMenu.linkURL,
-        triggeringPrincipal:
-          Services.scriptSecurityManager.getSystemPrincipal(),
+        triggeringPrincipal: gContextMenu.principal,
       })
     );
 
@@ -350,6 +353,28 @@ class nsZenGlanceManager extends nsZenDOMOperatedFeature {
     return this.#lastLinkClickData;
   }
 
+  /**
+   * Check whether a glance load is permitted for its triggering principal.
+   *
+   * @param {object} data - Glance data including URL and triggeringPrincipal
+   * @returns {boolean} Whether the load is allowed
+   */
+  #isGlanceLoadAllowed(data) {
+    const { url, triggeringPrincipal } = data ?? {};
+    if (typeof url !== "string" || !url.length || !triggeringPrincipal) {
+      return false;
+    }
+    try {
+      Services.scriptSecurityManager.checkLoadURIStrWithPrincipal(
+        triggeringPrincipal,
+        url
+      );
+    } catch {
+      return false;
+    }
+    return true;
+  }
+
   /**
    * Open a glance overlay with the specified data
    *
@@ -367,6 +392,13 @@ class nsZenGlanceManager extends nsZenDOMOperatedFeature {
       return Promise.resolve(this.#currentTab);
     }
 
+    // Existing-tab glances perform no navigation and are exempt; for fresh
+    // loads, refuse any URL the triggering principal isn't allowed to load
+    // (e.g. a web page linking to file://).
+    if (!existingTab && !this.#isGlanceLoadAllowed(data)) {
+      return Promise.resolve(null);
+    }
+
     if (!data.height || !data.width) {
       data = {
         ...data,
@@ -1414,6 +1446,23 @@ class nsZenGlanceManager extends nsZenDOMOperatedFeature {
     }
   }
 
+  /**
+   * Handle DOM Fullscreen request while inside glance
+   *
+   * @param {Event} event - The MozDOMFullscreen:Entered event
+   */
+  onFullscreenEntered(event) {
+    const browser = this.#currentBrowser;
+
+    if (!browser) {
+      return;
+    }
+
+    if (event.target === browser) {
+      this.fullyOpenGlance();
+    }
+  }
+
   /**
    * Manage tab close for glance tabs
    *
diff --git a/src/zen/sessionstore/ZenWindowSync.sys.mjs b/src/zen/sessionstore/ZenWindowSync.sys.mjs
index 0d4ad78ec..f4f993923 100644
--- a/src/zen/sessionstore/ZenWindowSync.sys.mjs
+++ b/src/zen/sessionstore/ZenWindowSync.sys.mjs
@@ -1232,19 +1232,38 @@ class nsZenWindowSync {
       activeIndex = Math.min(activeIndex, entries.length - 1);
       activeIndex = Math.max(activeIndex, 0);
       let entryToUse = (entries[activeIndex] || entries[0]) ?? null;
-      const initialState = {
-        entry: {
-          url: entryToUse?.url,
-          title: entryToUse?.title,
-        },
-        image,
-      };
-      this.#runOnAllWindows(null, win => {
-        const targetTab = this.getItemFromWindow(win, aTab.id);
-        if (targetTab) {
-          targetTab._zenPinnedInitialState = initialState;
-        }
-      });
+      this.#setPinnedInitialState(
+        aTab,
+        { url: entryToUse?.url, title: entryToUse?.title },
+        image
+      );
+    });
+  }
+
+  /**
+   * Sets the canonical pinned URL for a tab across all windows. Used to let the
+   * user edit a pinned tab's URL directly.
+   *
+   * @param {object} aTab - The tab to set the pinned URL for.
+   * @param {string} aUrl - The URL to store as the canonical pinned URL.
+   * @param {string} [aImage] - Optional Icon to store.
+   */
+  setPinnedUrl(aTab, aUrl, aImage) {
+    this.log(`Setting pinned url for tab ${aTab.id}`);
+    this.#setPinnedInitialState(
+      aTab,
+      { url: aUrl, title: aTab.zenStaticLabel },
+      aImage
+    );
+  }
+
+  #setPinnedInitialState(aTab, aEntry, aImage) {
+    const initialState = { entry: aEntry, image: aImage };
+    this.#runOnAllWindows(null, win => {
+      const targetTab = this.getItemFromWindow(win, aTab.id);
+      if (targetTab) {
+        targetTab._zenPinnedInitialState = initialState;
+      }
     });
   }
 
diff --git a/src/zen/space-routing/SpaceRoutingComponents.manifest b/src/zen/space-routing/SpaceRoutingComponents.manifest
new file mode 100644
index 000000000..d6a8c71a0
--- /dev/null
+++ b/src/zen/space-routing/SpaceRoutingComponents.manifest
@@ -0,0 +1,5 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+category browser-window-delayed-startup resource:///modules/zen/spacerouting/ZenSpaceRoutingManager.sys.mjs gZenSpaceRoutingManager.onDelayedBrowserStartup
\ No newline at end of file
diff --git a/src/zen/space-routing/ZenSpaceRoutingManager.sys.mjs b/src/zen/space-routing/ZenSpaceRoutingManager.sys.mjs
index d2025d618..7622417d8 100644
--- a/src/zen/space-routing/ZenSpaceRoutingManager.sys.mjs
+++ b/src/zen/space-routing/ZenSpaceRoutingManager.sys.mjs
@@ -18,6 +18,58 @@ class nsZenSpaceRoutingManager {
     this.#readFromDisk();
   }
 
+  /**
+   * Auto invoked for every window on delayed startup
+   *
+   * @param {nsIDOMWindow} window - The browser window that just started up
+   */
+  onDelayedBrowserStartup(window) {
+    const element = window.MozXULElement.parseXULToFragment(`
+        <menuseparator/>
+        <menuitem id="context_zen-add-domain-to-routing"
+                  data-lazy-l10n-id="tab-context-zen-add-domain-to-sr"
+                  data-l10n-args='{"tabCount": 1}'/>
+      `);
+    window.document.getElementById("context_undoCloseTab").after(element);
+
+    window.document
+      .getElementById("context_zen-add-domain-to-routing")
+      .addEventListener("command", this.#onAddSelectedToRouting.bind(this));
+    window.document
+      .getElementById("tabContextMenu")
+      .addEventListener(
+        "popupshowing",
+        this.#updateTabCloseCountState.bind(this)
+      );
+  }
+
+  /**
+   * Updates the "context_zen-add-domain-to-routing" command
+   * to reflect the number of selected tabs, when applicable.
+   *
+   * @param {Event} event - The event param
+   */
+  #updateTabCloseCountState(event) {
+    const window = event.target.documentGlobal;
+    window.document.l10n.setArgs(
+      window.document.getElementById("context_zen-add-domain-to-routing"),
+      { tabCount: window.gBrowser.selectedTabs.length }
+    );
+  }
+
+  /**
+   * Callback for whenever the menuitem command is ran
+   *
+   * @param {Event} event - The event parameter
+   */
+  #onAddSelectedToRouting(event) {
+    const window = event.target.documentGlobal;
+    const tabs = window.TabContextMenu.contextTab.multiselected
+      ? window.gBrowser.selectedTabs
+      : [window.TabContextMenu.contextTab];
+    this.addRouteForSelected(tabs, window);
+  }
+
   /**
    * Callback that will be executed from tabbrowser.js
    * This method can be used to stop the tab from being created.
@@ -52,7 +104,7 @@ class nsZenSpaceRoutingManager {
         break;
       default: {
         const targetWorkspace =
-          win?.gZenWorkspaces?.getWorkspaceFromId(targetRoute);
+          win.gZenWorkspaces.getWorkspaceFromId(targetRoute);
 
         if (targetWorkspace) {
           userContextId = targetWorkspace.containerTabId;
@@ -107,8 +159,26 @@ class nsZenSpaceRoutingManager {
    * @returns {boolean} True when the navigation should open in a new routed tab
    */
   shouldRedirectNavigation(uriString, currentWorkspaceId, win) {
+    return !!this.getRedirectTargetWorkspaceId(
+      uriString,
+      currentWorkspaceId,
+      win
+    );
+  }
+
+  /**
+   * Resolves the destination space for an in-place top-level navigation, or
+   * null when the navigation should be left alone (no rule, the destination is
+   * "most-recent-space", the tab already lives there, or the space is gone).
+   *
+   * @param {string} uriString - The destination URI
+   * @param {string|null} currentWorkspaceId - The zen-workspace-id of the navigating tab
+   * @param {Window} win - The owning browser window
+   * @returns {string|null} The target workspace id, or null to leave the navigation in place
+   */
+  getRedirectTargetWorkspaceId(uriString, currentWorkspaceId, win) {
     if (!win?.gZenWorkspaces?.workspaceEnabled) {
-      return false;
+      return null;
     }
 
     const targetRoute = this.routeUri(uriString, { fromExternal: false });
@@ -118,11 +188,13 @@ class nsZenSpaceRoutingManager {
       targetRoute === "most-recent-space" ||
       targetRoute === currentWorkspaceId
     ) {
-      return false;
+      return null;
     }
 
     // Only redirect when the destination space actually exists.
-    return !!win.gZenWorkspaces.getWorkspaceFromId(targetRoute);
+    return win.gZenWorkspaces.getWorkspaceFromId(targetRoute)
+      ? targetRoute
+      : null;
   }
 
   /**
@@ -173,10 +245,6 @@ class nsZenSpaceRoutingManager {
           if (targetWorkspace) {
             workspaces.moveTabToWorkspace(newTab, targetWorkspace.uuid);
 
-            if (inBackground) {
-              return;
-            }
-
             const mostRecentWindow =
               Services.wm.getMostRecentWindow("navigator:browser");
             const isOriginatingWindow = win === mostRecentWindow;
@@ -184,7 +252,10 @@ class nsZenSpaceRoutingManager {
               win.gZenWorkspaces.lastSelectedWorkspaceTabs[
                 targetWorkspace.uuid
               ] = newTab;
-              await win.gZenWorkspaces.changeWorkspace(targetWorkspace);
+
+              if (!inBackground) {
+                await win.gZenWorkspaces.changeWorkspace(targetWorkspace);
+              }
             }
           }
         }
@@ -403,6 +474,37 @@ class nsZenSpaceRoutingManager {
     this.#file.data.defaultRouteExternal = routeType;
   }
 
+  /**
+   * Adds a new route for all given tabs
+   *
+   * @param {Array<object>} selectedTabs - The tabs that should be routed
+   * @param {Window} parentWindow - The window from which this is being executed
+   */
+  addRouteForSelected(selectedTabs, parentWindow) {
+    const newRoute = this.createNewRoute();
+    let routeReference = "";
+
+    if (selectedTabs.length == 1) {
+      newRoute.matchType = "contains";
+      routeReference = selectedTabs[0].linkedBrowser.currentURI.host;
+    } else {
+      newRoute.matchType = "regex";
+      routeReference = "(";
+      for (let i = 0; i < selectedTabs.length; i++) {
+        const domain = selectedTabs[i].linkedBrowser.currentURI.host;
+        routeReference += domain.replaceAll(".", "\.");
+        if (i != selectedTabs.length - 1) {
+          routeReference += "|";
+        }
+      }
+      routeReference += ")";
+    }
+
+    newRoute.reference = routeReference;
+    this.updateRoute(newRoute);
+    this.openSpaceRoutingDialog(parentWindow);
+  }
+
   /**
    * Saves all routes. The list of
    * routes is stripped of empty routes
diff --git a/src/zen/spaces/ZenSpaceCreation.mjs b/src/zen/spaces/ZenSpaceCreation.mjs
index 330ca9e02..c84a5bf7b 100644
--- a/src/zen/spaces/ZenSpaceCreation.mjs
+++ b/src/zen/spaces/ZenSpaceCreation.mjs
@@ -182,8 +182,8 @@ class nsZenWorkspaceCreation extends MozXULElement {
         this.onProfileCommand.bind(this)
       );
       this.profilesPopup.addEventListener(
-        "popupshown",
-        this.onProfilePopupShown.bind(this)
+        "popupshowing",
+        this.onProfilePopupShowing.bind(this)
       );
       this.profilesPopup.addEventListener(
         "command",
@@ -296,7 +296,7 @@ class nsZenWorkspaceCreation extends MozXULElement {
     this.profilesPopup.openPopup(event.target, "after_start");
   }
 
-  onProfilePopupShown(event) {
+  onProfilePopupShowing(event) {
     return window.createUserContextMenu(event, {
       isContextMenu: true,
       showDefaultTab: true,
diff --git a/src/zen/spaces/ZenSpaceManager.mjs b/src/zen/spaces/ZenSpaceManager.mjs
index 3ba066179..51cfb89ba 100644
--- a/src/zen/spaces/ZenSpaceManager.mjs
+++ b/src/zen/spaces/ZenSpaceManager.mjs
@@ -1507,18 +1507,26 @@ class nsZenWorkspaces {
       }
 
       if (container) {
+        const newtabPlacement = Services.prefs.getBoolPref(
+          "zen.view.show-newtab-button-top",
+          false
+        );
+        const insertElement = newtabPlacement
+          ? container.firstChild
+          : container.lastChild;
+
         if (tab.group?.hasAttribute("split-view-group")) {
           gBrowser.zenHandleTabMove(tab.group, () => {
             for (const subTab of tab.group.tabs) {
               subTab.setAttribute("zen-workspace-id", workspaceID);
             }
-            container.insertBefore(tab.group, container.lastChild);
+            container.insertBefore(tab.group, insertElement);
           });
           continue;
         }
         gBrowser.zenHandleTabMove(tab, () => {
           tab.setAttribute("zen-workspace-id", workspaceID);
-          container.insertBefore(tab, container.lastChild);
+          container.insertBefore(tab, insertElement);
         });
       }
       // also change glance tab if it's the same tab
@@ -2290,12 +2298,12 @@ class nsZenWorkspaces {
   }
 
   onBeforeTabSelect(aTab) {
-    if (this.#inChangingWorkspace) {
+    if (this.#inChangingWorkspace || !aTab) {
       // Just in case, Let's not do these checks while we are
       // in the middle of changing workspace,
       return false;
     }
-    const tabSpace = aTab?.getAttribute("zen-workspace-id");
+    const tabSpace = aTab.getAttribute("zen-workspace-id");
     if (
       tabSpace &&
       tabSpace !== this.activeWorkspace &&
diff --git a/src/zen/split-view/ZenViewSplitter.mjs b/src/zen/split-view/ZenViewSplitter.mjs
index 8674dd0bd..bf8c489a9 100644
--- a/src/zen/split-view/ZenViewSplitter.mjs
+++ b/src/zen/split-view/ZenViewSplitter.mjs
@@ -1229,7 +1229,11 @@ class nsZenViewSplitter extends nsZenDOMOperatedFeature {
     const newTab = this.openAndSwitchToTab(url, {
       skipRoute: true,
       inBackground: false,
+      triggeringPrincipal: window.gContextMenu.principal,
     });
+    if (!newTab) {
+      return;
+    }
     this.splitTabs([currentTab, newTab], undefined, 1);
   }
 
@@ -1240,13 +1244,17 @@ class nsZenViewSplitter extends nsZenDOMOperatedFeature {
    */
   contextSplitTabs(otherTabHint = null) {
     let tabs;
-    let currentTab = TabContextMenu.contextTab || gBrowser.selectedTab;
+    let currentTab = gZenGlanceManager.getTabOrGlanceParent(
+      TabContextMenu.contextTab || gBrowser.selectedTab
+    );
     if (currentTab.multiselected) {
       tabs = gBrowser.selectedTabs;
     } else if (!currentTab.selected && !currentTab.splitView) {
       tabs = [
         currentTab,
-        ...gBrowser.selectedTabs.filter(t => t !== currentTab),
+        ...gBrowser.selectedTabs.filter(
+          t => t !== currentTab && !t.hasAttribute("zen-glance-tab")
+        ),
       ];
     } else {
       tabs = [currentTab];
@@ -1975,9 +1983,24 @@ class nsZenViewSplitter extends nsZenDOMOperatedFeature {
    * @returns {tab} The tab that was opened
    */
   openAndSwitchToTab(url, options) {
+    const triggeringPrincipal = options?.triggeringPrincipal;
+    if (!triggeringPrincipal) {
+      return null;
+    }
+    try {
+      Services.scriptSecurityManager.checkLoadURIStrWithPrincipal(
+        triggeringPrincipal,
+        url
+      );
+    } catch {
+      return null;
+    }
     const parentWindow = window.parent;
     const targetWindow = parentWindow || window;
-    const tab = targetWindow.gBrowser.addTrustedTab(url, options);
+    const tab = targetWindow.gBrowser.addTab(url, {
+      ...options,
+      triggeringPrincipal,
+    });
     targetWindow.gBrowser.selectedTab = tab;
     return tab;
   }
diff --git a/src/zen/tabs/ZenPinnedTabManager.mjs b/src/zen/tabs/ZenPinnedTabManager.mjs
index b2adb121f..4a441f8b2 100644
--- a/src/zen/tabs/ZenPinnedTabManager.mjs
+++ b/src/zen/tabs/ZenPinnedTabManager.mjs
@@ -246,6 +246,66 @@ class nsZenPinnedTabManager extends nsZenDOMOperatedFeature {
     gZenUIManager.showToast("zen-pinned-tab-replaced");
   }
 
+  async editPinnedUrl(tab = undefined) {
+    tab ??= TabContextMenu.contextTab;
+    if (!tab || !tab.pinned) {
+      return;
+    }
+
+    const initialUrl =
+      tab._zenPinnedInitialState?.entry?.url ||
+      tab.linkedBrowser?.currentURI?.spec;
+    const [title, label] = await document.l10n.formatValues([
+      { id: "zen-pinned-tab-edit-url-title" },
+      { id: "zen-pinned-tab-edit-url-label" },
+    ]);
+    const result = { value: initialUrl ?? "" };
+    const confirmed = Services.prompt.prompt(
+      window,
+      title,
+      label,
+      result,
+      null,
+      { value: false }
+    );
+    if (!confirmed) {
+      return;
+    }
+
+    let uri;
+    try {
+      uri = Services.uriFixup.getFixupURIInfo(
+        result.value.trim(),
+        Ci.nsIURIFixup.FIXUP_FLAG_FIX_SCHEME_TYPOS
+      ).preferredURI;
+    } catch (_) {}
+    if (!uri) {
+      gZenUIManager.showToast("zen-pinned-tab-url-invalid");
+      return;
+    }
+    const url = uri.spec;
+
+    // Skip when the value wasn't actually changed from what was prefilled.
+    if (!url || url === initialUrl) {
+      return;
+    }
+
+    const image = tab.zenStaticIcon || (await this.#getCachedFavicon(uri));
+    window.gZenWindowSync.setPinnedUrl(tab, url, image);
+    this.#resetTabToStoredState(tab);
+    gZenUIManager.showToast("zen-pinned-tab-url-edited");
+  }
+
+  async #getCachedFavicon(uri) {
+    try {
+      const favicon = await PlacesUtils.favicons.getFaviconForPage(uri);
+      return favicon?.dataURI?.spec;
+    } catch (ex) {
+      console.error("Failed to get favicon for edited pinned url:", ex);
+      return null;
+    }
+  }
+
   _initClosePinnedTabShortcut() {
     let cmdClose = document.getElementById("cmd_close");
 
@@ -545,11 +605,20 @@ class nsZenPinnedTabManager extends nsZenDOMOperatedFeature {
     }
     const elements = window.MozXULElement.parseXULToFragment(`
             <menuseparator id="context_zen-pinned-tab-separator" hidden="true"/>
-            <menuitem id="context_zen-replace-pinned-url-with-current"
-                      data-lazy-l10n-id="tab-context-zen-replace-pinned-url-with-current"
-                      data-l10n-args="{&quot;isEssential&quot;:&quot;&quot;}"
-                      hidden="true"
-                      command="cmd_zenReplacePinnedUrlWithCurrent"/>
+            <menu id="context_zen-edit-pinned-page"
+                  data-lazy-l10n-id="tab-context-zen-edit-pinned-page"
+                  data-l10n-args="{&quot;isEssential&quot;:&quot;&quot;}"
+                  hidden="true">
+              <menupopup>
+                <menuitem id="context_zen-replace-pinned-url-with-current"
+                          data-lazy-l10n-id="tab-context-zen-replace-pinned-url-with-current"
+                          data-l10n-args="{&quot;isEssential&quot;:&quot;&quot;}"
+                          command="cmd_zenReplacePinnedUrlWithCurrent"/>
+                <menuitem id="context_zen-edit-pinned-url"
+                          data-lazy-l10n-id="tab-context-zen-edit-pinned-url"
+                          command="cmd_zenEditPinnedUrl"/>
+              </menupopup>
+            </menu>
             <menuitem id="context_zen-reset-pinned-tab"
                       data-lazy-l10n-id="tab-context-zen-reset-pinned-tab"
                       data-l10n-args="{&quot;isEssential&quot;:&quot;&quot;}"
@@ -619,15 +688,24 @@ class nsZenPinnedTabManager extends nsZenDOMOperatedFeature {
     const zenResetPinnedTab = document.getElementById(
       "context_zen-reset-pinned-tab"
     );
+    const zenEditPinnedPage = document.getElementById(
+      "context_zen-edit-pinned-page"
+    );
     const zenReplacePinnedUrl = document.getElementById(
       "context_zen-replace-pinned-url-with-current"
     );
-    [zenResetPinnedTab, zenReplacePinnedUrl].forEach(element => {
+    [zenResetPinnedTab, zenEditPinnedPage].forEach(element => {
       if (element) {
         element.hidden = !isVisible;
-        document.l10n.setArgs(element, { isEssential });
       }
     });
+    [zenResetPinnedTab, zenEditPinnedPage, zenReplacePinnedUrl].forEach(
+      element => {
+        if (element) {
+          document.l10n.setArgs(element, { isEssential });
+        }
+      }
+    );
     zenAddEssential.hidden = isEssential || !!contextTab.group;
     document.l10n
       .formatValue("tab-context-zen-add-essential-badge", {
@@ -857,7 +935,7 @@ class nsZenPinnedTabManager extends nsZenDOMOperatedFeature {
     ) {
       return;
     }
-    // Remove # and ? from the URL
+    // Remove # from the URL
     const pinUrl = tab._zenPinnedInitialState.entry.url.split("#")[0];
     const currentUrl = location.split("#")[0];
     // Add an indicator that the pin has been changed
@@ -897,10 +975,14 @@ class nsZenPinnedTabManager extends nsZenDOMOperatedFeature {
     } else {
       tab.setAttribute("zen-pinned-changed", "true");
     }
-    tab.style.setProperty(
-      "--zen-original-tab-icon",
-      `url(${tab._zenPinnedInitialState.image})`
-    );
+    if (tab._zenPinnedInitialState.image) {
+      tab.style.setProperty(
+        "--zen-original-tab-icon",
+        `url(${tab._zenPinnedInitialState.image})`
+      );
+    } else {
+      tab.style.removeProperty("--zen-original-tab-icon");
+    }
   }
 
   removeTabContainersDragoverClass(hideIndicator = true) {
diff --git a/src/zen/tests/pinned/browser.toml b/src/zen/tests/pinned/browser.toml
index fb11e91bb..8cdc130e8 100644
--- a/src/zen/tests/pinned/browser.toml
+++ b/src/zen/tests/pinned/browser.toml
@@ -13,6 +13,8 @@ prefs = ["zen.workspaces.separate-essentials=false"]
 
 ["browser_pinned_created.js"]
 
+["browser_pinned_edit_url.js"]
+
 ["browser_pinned_nounload_reset.js"]
 
 ["browser_pinned_reset_button.js"]
diff --git a/src/zen/tests/pinned/browser_pinned_edit_url.js b/src/zen/tests/pinned/browser_pinned_edit_url.js
new file mode 100644
index 000000000..dae86fa9e
--- /dev/null
+++ b/src/zen/tests/pinned/browser_pinned_edit_url.js
@@ -0,0 +1,384 @@
+/* Any copyright is dedicated to the Public Domain.
+   https://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+async function pinTab(url) {
+  const tab = await BrowserTestUtils.openNewForegroundTab(gBrowser, url);
+  gBrowser.pinTab(tab);
+  await gBrowser.TabStateFlusher.flush(tab.linkedBrowser);
+  // eslint-disable-next-line mozilla/no-arbitrary-setTimeout
+  await new Promise(r => setTimeout(r, 500));
+  return tab;
+}
+
+// XPCOM service methods can't be stubbed in place (non-configurable), so we
+// swap the whole service object out for a mock and restore it afterwards.
+function mockPrompt(value) {
+  const original = Services.prompt;
+  Services.prompt = {
+    QueryInterface: ChromeUtils.generateQI([Ci.nsIPromptService]),
+    prompt(win, title, label, result) {
+      if (value === null) {
+        return false; // user cancelled
+      }
+      result.value = value;
+      return true;
+    },
+  };
+  return () => {
+    Services.prompt = original;
+  };
+}
+
+function mockFavicons(faviconSpec) {
+  const original = PlacesUtils.favicons;
+  const mock = {
+    callCount: 0,
+    defaultFavicon: { spec: "data:image/png;base64,DEFAULT" },
+    getFaviconForPage() {
+      mock.callCount++;
+      return Promise.resolve(
+        faviconSpec ? { dataURI: { spec: faviconSpec } } : null
+      );
+    },
+  };
+  PlacesUtils.favicons = mock;
+  return {
+    mock,
+    restore: () => {
+      PlacesUtils.favicons = original;
+    },
+  };
+}
+
+add_task(async function test_EditPinnedUrl_SurvivesRebuild() {
+  // Pinned tab at url1 (loaded), then select a different tab (unfocus it).
+  const tab = await pinTab("https://example.com/1");
+  const other = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    "https://example.com/other"
+  );
+
+  const editedUrl = "https://example.com/edited";
+  const restorePrompt = mockPrompt(editedUrl);
+  const favicons = mockFavicons("data:image/png;base64,iVBORw0KGgo=");
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+
+    // Close + re-open rebuilds the tab: the in-memory _zenPinnedInitialState is
+    // gone and gets reconstructed from the persisted session via
+    // setPinnedTabState (exactly what #onSessionStoreInitialized does).
+    delete tab._zenPinnedInitialState;
+    await window.gZenWindowSync.setPinnedTabState(tab);
+
+    Assert.equal(
+      tab._zenPinnedInitialState.entry.url,
+      editedUrl,
+      "After the tab is rebuilt, the pinned URL should still be the edited one"
+    );
+  } finally {
+    restorePrompt();
+    favicons.restore();
+    await BrowserTestUtils.removeTab(other);
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(async function test_EditPinnedUrl_ActiveTabNavigates() {
+  // Editing the active (focused) pinned tab applies the new URL immediately:
+  // the live tab navigates to it (matching Arc's behavior).
+  const tab = await pinTab("https://example.com/1");
+  Assert.equal(gBrowser.selectedTab, tab, "the pinned tab should be active");
+
+  const editedUrl = "https://example.com/edited";
+  const restorePrompt = mockPrompt(editedUrl);
+  const favicons = mockFavicons("data:image/png;base64,iVBORw0KGgo=");
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+    await BrowserTestUtils.waitForCondition(
+      () => tab.linkedBrowser.currentURI.spec === editedUrl,
+      "the active pinned tab to navigate to the edited URL"
+    );
+
+    Assert.equal(
+      tab.linkedBrowser.currentURI.spec,
+      editedUrl,
+      "Editing the active pinned tab should navigate it to the new URL"
+    );
+  } finally {
+    restorePrompt();
+    favicons.restore();
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(
+  async function test_EditPinnedUrl_FaviconLookupErrorLeavesImageEmpty() {
+    const tab = await pinTab("https://example.com/1");
+    const restorePrompt = mockPrompt("https://example.org/edited");
+    const favicons = mockFavicons(null);
+    // Simulate a Places DB failure so #getCachedFavicon hits its catch branch.
+    favicons.mock.getFaviconForPage = () =>
+      Promise.reject(new Error("simulated favicon DB failure"));
+
+    try {
+      await gZenPinnedTabManager.editPinnedUrl(tab);
+
+      Assert.equal(
+        tab._zenPinnedInitialState.entry.url,
+        "https://example.org/edited",
+        "The URL should still be updated when the favicon lookup fails"
+      );
+      ok(
+        !tab._zenPinnedInitialState.image,
+        "The image should be left empty (populated by the next navigation)"
+      );
+    } finally {
+      restorePrompt();
+      favicons.restore();
+      await BrowserTestUtils.removeTab(tab);
+    }
+  }
+);
+
+add_task(async function test_EditPinnedUrl_UpdatesUrlAndFavicon() {
+  const tab = await pinTab("https://example.com/1");
+  const faviconSpec = "data:image/png;base64,iVBORw0KGgo=";
+  const restorePrompt = mockPrompt("https://example.org/edited");
+  const favicons = mockFavicons(faviconSpec);
+
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+
+    Assert.equal(
+      tab._zenPinnedInitialState.entry.url,
+      "https://example.org/edited",
+      "The pinned URL should be updated to the edited value"
+    );
+    Assert.equal(
+      tab._zenPinnedInitialState.image,
+      faviconSpec,
+      "The stored icon should be the cached favicon for the new URL"
+    );
+  } finally {
+    restorePrompt();
+    favicons.restore();
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(async function test_EditPinnedUrl_NoCachedFaviconLeavesImageEmpty() {
+  const tab = await pinTab("https://example.com/1");
+  const restorePrompt = mockPrompt("https://example.org/edited");
+  const favicons = mockFavicons(null); // no cached favicon for the new URL
+
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+
+    ok(
+      !tab._zenPinnedInitialState.image,
+      "Without a cached favicon the image is left empty, not the default; the " +
+        "next navigation captures the real icon"
+    );
+  } finally {
+    restorePrompt();
+    favicons.restore();
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(async function test_EditPinnedUrl_ClearsStaleTitle() {
+  const tab = await pinTab("https://example.com/1");
+  const restorePrompt = mockPrompt("https://example.org/edited");
+  const favicons = mockFavicons("data:image/png;base64,iVBORw0KGgo=");
+
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+
+    ok(
+      !tab._zenPinnedInitialState.entry.title,
+      "The previous title is cleared so the new page's title is used on load"
+    );
+  } finally {
+    restorePrompt();
+    favicons.restore();
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(async function test_EditPinnedUrl_KeepsCustomLabel() {
+  const tab = await pinTab("https://example.com/1");
+  tab.zenStaticLabel = "My Pinned Tab";
+  const restorePrompt = mockPrompt("https://example.org/edited");
+  const favicons = mockFavicons("data:image/png;base64,iVBORw0KGgo=");
+
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+
+    Assert.equal(
+      tab._zenPinnedInitialState.entry.title,
+      "My Pinned Tab",
+      "An explicit custom label is preserved across a URL edit"
+    );
+  } finally {
+    restorePrompt();
+    favicons.restore();
+    delete tab.zenStaticLabel;
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(async function test_EditPinnedUrl_KeepsCustomIcon() {
+  const tab = await pinTab("https://example.com/1");
+  const customIcon = "data:image/svg+xml,custom-icon";
+  tab.zenStaticIcon = customIcon;
+  const restorePrompt = mockPrompt("https://example.org/edited");
+  const favicons = mockFavicons("data:image/png;base64,iVBORw0KGgo=");
+
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+
+    Assert.equal(
+      tab._zenPinnedInitialState.entry.url,
+      "https://example.org/edited",
+      "The pinned URL should still be updated when a custom icon is set"
+    );
+    Assert.equal(
+      tab._zenPinnedInitialState.image,
+      customIcon,
+      "A user-set custom icon should be preserved, not overridden by a favicon"
+    );
+    Assert.equal(
+      favicons.mock.callCount,
+      0,
+      "Favicon lookup should be skipped when a custom icon is set"
+    );
+  } finally {
+    restorePrompt();
+    favicons.restore();
+    delete tab.zenStaticIcon;
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(async function test_EditPinnedUrl_InvalidUrlKeepsState() {
+  const tab = await pinTab("https://example.com/1");
+  const originalUrl = tab._zenPinnedInitialState.entry.url;
+  const restorePrompt = mockPrompt("   "); // whitespace only -> not a valid URL
+  const favicons = mockFavicons("data:image/png;base64,iVBORw0KGgo=");
+
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+
+    Assert.equal(
+      tab._zenPinnedInitialState.entry.url,
+      originalUrl,
+      "The pinned URL should be unchanged for invalid input"
+    );
+    ok(
+      !tab.hasAttribute("zen-pinned-changed"),
+      "The tab should not be marked as changed for invalid input"
+    );
+  } finally {
+    restorePrompt();
+    favicons.restore();
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(async function test_EditPinnedUrl_CancelKeepsState() {
+  const tab = await pinTab("https://example.com/1");
+  const originalUrl = tab._zenPinnedInitialState.entry.url;
+  const restorePrompt = mockPrompt(null); // user cancels the dialog
+
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+
+    Assert.equal(
+      tab._zenPinnedInitialState.entry.url,
+      originalUrl,
+      "The pinned URL should be unchanged when the dialog is cancelled"
+    );
+  } finally {
+    restorePrompt();
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(async function test_EditPinnedUrl_FixesSchemeTypo() {
+  const tab = await pinTab("https://example.com/1");
+  const restorePrompt = mockPrompt("htps://example.org/typo");
+  const favicons = mockFavicons("data:image/png;base64,iVBORw0KGgo=");
+
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+
+    Assert.equal(
+      tab._zenPinnedInitialState.entry.url,
+      "https://example.org/typo",
+      "A mistyped scheme (htps://) should be auto-fixed to https://"
+    );
+  } finally {
+    restorePrompt();
+    favicons.restore();
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(async function test_EditPinnedUrl_AddsMissingScheme() {
+  const tab = await pinTab("https://example.com/1");
+  const restorePrompt = mockPrompt("example.org/no-scheme");
+  const favicons = mockFavicons("data:image/png;base64,iVBORw0KGgo=");
+
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+
+    const stored = tab._zenPinnedInitialState.entry.url;
+    ok(
+      /^https?:\/\//.test(stored),
+      `A scheme should be prepended when omitted (got "${stored}")`
+    );
+    ok(
+      stored.endsWith("example.org/no-scheme"),
+      `Host and path should be preserved (got "${stored}")`
+    );
+  } finally {
+    restorePrompt();
+    favicons.restore();
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
+
+add_task(async function test_EditPinnedUrl_PrefillsWithStoredUrl() {
+  const tab = await pinTab("https://example.com/1");
+  // The stored pinned URL differs from the live browser URL (e.g. it was pinned
+  // as http but the server redirected the tab to https).
+  tab._zenPinnedInitialState = {
+    entry: { url: "http://example.com/pinned" },
+    image: "",
+  };
+
+  let prefilled;
+  const originalPrompt = Services.prompt;
+  Services.prompt = {
+    QueryInterface: ChromeUtils.generateQI([Ci.nsIPromptService]),
+    prompt(win, title, label, result) {
+      prefilled = result.value;
+      return false; // cancel, we only care about the prefilled value
+    },
+  };
+
+  try {
+    await gZenPinnedTabManager.editPinnedUrl(tab);
+
+    Assert.equal(
+      prefilled,
+      "http://example.com/pinned",
+      "The edit dialog should prefill with the stored pinned URL, not the live browser URL"
+    );
+  } finally {
+    Services.prompt = originalPrompt;
+    await BrowserTestUtils.removeTab(tab);
+  }
+});
diff --git a/surfer.json b/surfer.json
index b1104a111..9e421eee6 100644
--- a/surfer.json
+++ b/surfer.json
@@ -5,8 +5,8 @@
   "binaryName": "zen",
   "version": {
     "product": "firefox",
-    "version": "152.0.1",
-    "candidate": "152.0.1",
+    "version": "152.0.4",
+    "candidate": "152.0.4",
     "candidateBuild": 1
   },
   "buildOptions": {
@@ -20,7 +20,7 @@
       "brandShortName": "Zen",
       "brandFullName": "Zen Browser",
       "release": {
-        "displayVersion": "1.21.3b",
+        "displayVersion": "1.21.5b",
         "github": {
           "repo": "zen-browser/desktop"
         },