diff --git a/prefs/zen/session-store.yaml b/prefs/zen/session-store.yaml
index 6f6911592..560800a9a 100644
--- a/prefs/zen/session-store.yaml
+++ b/prefs/zen/session-store.yaml
@@ -10,3 +10,6 @@
 
 - name: zen.session-store.restore-unsynced-windows
   value: true
+
+- name: browser.sessionstore.max_windows_undo
+  value: 2
diff --git a/src/browser/components/sessionstore/SessionStore-sys-mjs.patch b/src/browser/components/sessionstore/SessionStore-sys-mjs.patch
index 191ceef51..152104712 100644
--- a/src/browser/components/sessionstore/SessionStore-sys-mjs.patch
+++ b/src/browser/components/sessionstore/SessionStore-sys-mjs.patch
@@ -1,5 +1,5 @@
 diff --git a/browser/components/sessionstore/SessionStore.sys.mjs b/browser/components/sessionstore/SessionStore.sys.mjs
-index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5549dd4dd 100644
+index 2a055f0c5f34f0a2667f659185120c07d38f4e41..2f63071f78782dbc30bde25b3bcaa96faedf6f0b 100644
 --- a/browser/components/sessionstore/SessionStore.sys.mjs
 +++ b/browser/components/sessionstore/SessionStore.sys.mjs
 @@ -127,6 +127,9 @@ const TAB_EVENTS = [
@@ -136,28 +136,24 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
  
            if (!isLastWindow && winData.closedId > -1) {
              this._addClosedAction(
-@@ -2589,7 +2608,10 @@ var SessionStoreInternal = {
+@@ -2589,7 +2608,7 @@ var SessionStoreInternal = {
     *        to call this method again asynchronously (for example, after
     *        a window flush).
     */
 -  maybeSaveClosedWindow(winData, isLastWindow) {
 +  maybeSaveClosedWindow(winData, isLastWindow, isLastRegularWindow = false) {
-+    if (this._saveableClosedWindowData.has(winData)) {
-+      lazy.ZenSessionStore.maybeSaveClosedWindow(winData, isLastRegularWindow);
-+    }
      // Make sure SessionStore is still running, and make sure that we
      // haven't chosen to forget this window.
      if (
-@@ -2608,6 +2630,8 @@ var SessionStoreInternal = {
+@@ -2606,6 +2625,7 @@ var SessionStoreInternal = {
+       // _closedWindows from a previous call to this function.
+       let winIndex = this._closedWindows.indexOf(winData);
        let alreadyStored = winIndex != -1;
++      lazy.ZenSessionStore.maybeSaveClosedWindow(winData, isLastRegularWindow);
        // If sidebar command is truthy, i.e. sidebar is open, store sidebar settings
        let shouldStore = hasSaveableTabs || isLastWindow;
-+      // TODO: Do we want to store closed Zen windows? All of them are synced anyways
-+      shouldStore = false;
  
-       if (shouldStore && !alreadyStored) {
-         let index = this._closedWindows.findIndex(win => {
-@@ -3408,7 +3432,7 @@ var SessionStoreInternal = {
+@@ -3408,7 +3428,7 @@ var SessionStoreInternal = {
      if (!isPrivateWindow && tabState.isPrivate) {
        return;
      }
@@ -166,7 +162,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
        return;
      }
  
-@@ -4129,6 +4153,12 @@ var SessionStoreInternal = {
+@@ -4129,6 +4149,12 @@ var SessionStoreInternal = {
          Math.min(tabState.index, tabState.entries.length)
        );
        tabState.pinned = false;
@@ -179,7 +175,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
  
        if (inBackground === false) {
          aWindow.gBrowser.selectedTab = newTab;
-@@ -4565,6 +4595,8 @@ var SessionStoreInternal = {
+@@ -4565,6 +4591,8 @@ var SessionStoreInternal = {
        // Append the tab if we're opening into a different window,
        tabIndex: aSource == aTargetWindow ? pos : Infinity,
        pinned: state.pinned,
@@ -188,7 +184,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
        userContextId: state.userContextId,
        skipLoad: true,
        preferredRemoteType,
-@@ -5414,7 +5446,7 @@ var SessionStoreInternal = {
+@@ -5414,7 +5442,7 @@ var SessionStoreInternal = {
  
      for (let i = tabbrowser.pinnedTabCount; i < tabbrowser.tabs.length; i++) {
        let tab = tabbrowser.tabs[i];
@@ -197,7 +193,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
          removableTabs.push(tab);
        }
      }
-@@ -5525,7 +5557,7 @@ var SessionStoreInternal = {
+@@ -5525,7 +5553,7 @@ var SessionStoreInternal = {
  
      // collect the data for all windows
      for (ix in this._windows) {
@@ -206,7 +202,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
          // window data is still in _statesToRestore
          continue;
        }
-@@ -5668,11 +5700,12 @@ var SessionStoreInternal = {
+@@ -5668,11 +5696,12 @@ var SessionStoreInternal = {
      }
  
      let tabbrowser = aWindow.gBrowser;
@@ -220,7 +216,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
      // update the internal state data for this window
      for (let tab of tabs) {
        if (tab == aWindow.FirefoxViewHandler.tab) {
-@@ -5683,6 +5716,9 @@ var SessionStoreInternal = {
+@@ -5683,6 +5712,9 @@ var SessionStoreInternal = {
        tabsData.push(tabData);
      }
  
@@ -230,7 +226,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
      // update tab group state for this window
      winData.groups = [];
      for (let tabGroup of aWindow.gBrowser.tabGroups) {
-@@ -5695,7 +5731,7 @@ var SessionStoreInternal = {
+@@ -5695,7 +5727,7 @@ var SessionStoreInternal = {
      // a window is closed, point to the first item in the tab strip instead (it will never be the Firefox View tab,
      // since it's only inserted into the tab strip after it's selected).
      if (aWindow.FirefoxViewHandler.tab?.selected) {
@@ -239,7 +235,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
        winData.title = tabbrowser.tabs[0].label;
      }
      winData.selected = selectedIndex;
-@@ -5810,8 +5846,8 @@ var SessionStoreInternal = {
+@@ -5810,8 +5842,8 @@ var SessionStoreInternal = {
      // selectTab represents.
      let selectTab = 0;
      if (overwriteTabs) {
@@ -250,7 +246,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
        selectTab = Math.min(selectTab, winData.tabs.length);
      }
  
-@@ -5833,6 +5869,7 @@ var SessionStoreInternal = {
+@@ -5833,6 +5865,7 @@ var SessionStoreInternal = {
      if (overwriteTabs) {
        for (let i = tabbrowser.browsers.length - 1; i >= 0; i--) {
          if (!tabbrowser.tabs[i].selected) {
@@ -258,7 +254,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
            tabbrowser.removeTab(tabbrowser.tabs[i]);
          }
        }
-@@ -5866,6 +5903,12 @@ var SessionStoreInternal = {
+@@ -5866,6 +5899,12 @@ var SessionStoreInternal = {
          savedTabGroup => !openTabGroupIdsInWindow.has(savedTabGroup.id)
        );
      }
@@ -271,7 +267,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
  
      // Move the originally open tabs to the end.
      if (initialTabs) {
-@@ -6419,6 +6462,25 @@ var SessionStoreInternal = {
+@@ -6419,6 +6458,25 @@ var SessionStoreInternal = {
  
      // Most of tabData has been restored, now continue with restoring
      // attributes that may trigger external events.
@@ -297,7 +293,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
  
      if (tabData.pinned) {
        tabbrowser.pinTab(tab);
-@@ -6567,6 +6629,9 @@ var SessionStoreInternal = {
+@@ -6567,6 +6625,9 @@ var SessionStoreInternal = {
          aWindow.gURLBar.readOnly = false;
        }
      }
@@ -307,7 +303,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
  
      let promiseParts = Promise.withResolvers();
      aWindow.setTimeout(() => {
-@@ -7343,7 +7408,7 @@ var SessionStoreInternal = {
+@@ -7343,7 +7404,7 @@ var SessionStoreInternal = {
  
        let groupsToSave = new Map();
        for (let tIndex = 0; tIndex < window.tabs.length; ) {
@@ -316,7 +312,7 @@ index 2a055f0c5f34f0a2667f659185120c07d38f4e41..6f956ceeadd17afa0bc55355cd97e4e5
            // Adjust window.selected
            if (tIndex + 1 < window.selected) {
              window.selected -= 1;
-@@ -7358,7 +7423,7 @@ var SessionStoreInternal = {
+@@ -7358,7 +7419,7 @@ var SessionStoreInternal = {
            );
            // We don't want to increment tIndex here.
            continue;
diff --git a/src/zen/common/modules/ZenMenubar.mjs b/src/zen/common/modules/ZenMenubar.mjs
index 2f65b8d7b..2c5773905 100644
--- a/src/zen/common/modules/ZenMenubar.mjs
+++ b/src/zen/common/modules/ZenMenubar.mjs
@@ -24,6 +24,7 @@ export class nsZenMenuBar {
     this.#initViewMenu();
     this.#initSpacesMenu();
     this.#initAppMenu();
+    this.#hideWindowRestoreMenus();
   }
 
   #initViewMenu() {
@@ -121,4 +122,12 @@ export class nsZenMenuBar {
                 command="cmd_zenNewNavigatorUnsynced"/>`)
     );
   }
+
+  #hideWindowRestoreMenus() {
+    const itemsToHide = ["appMenuRecentlyClosedWindows", "historyUndoWindowMenu"];
+    for (const id of itemsToHide) {
+      const element = PanelMultiView.getViewNode(document, id);
+      element.setAttribute("hidden", "true");
+    }
+  }
 }
diff --git a/src/zen/kbs/ZenKeyboardShortcuts.mjs b/src/zen/kbs/ZenKeyboardShortcuts.mjs
index 684e85976..1f72ea00e 100644
--- a/src/zen/kbs/ZenKeyboardShortcuts.mjs
+++ b/src/zen/kbs/ZenKeyboardShortcuts.mjs
@@ -506,6 +506,10 @@ class KeyShortcut {
     return this.#disabled;
   }
 
+  setDisabled(value) {
+    this.#disabled = value;
+  }
+
   isReserved() {
     return this.#reserved;
   }
@@ -1120,11 +1124,21 @@ class nsZenKeyboardShortcutsVersioner {
         )
       );
       // Also, change the default for new empty split from + to * on mac
+      // and disable the "Restore closed window" shortcut by default due to conflicts
+      let emptySplitFound = false,
+        undoCloseWindowFound = false;
       for (let shortcut of data) {
         if (shortcut.getID() == "zen-new-empty-split-view" && AppConstants.platform == "macosx") {
           if (shortcut.getKeyName() == "+") {
             shortcut.setNewBinding("*");
           }
+          emptySplitFound = true;
+        } else if (shortcut.getID() == "key_undoCloseWindow") {
+          shortcut.shouldBeEmpty = true;
+          shortcut.setDisabled(true);
+          undoCloseWindowFound = true;
+        }
+        if (emptySplitFound && undoCloseWindowFound) {
           break;
         }
       }
diff --git a/src/zen/sessionstore/ZenWindowSync.sys.mjs b/src/zen/sessionstore/ZenWindowSync.sys.mjs
index a05f4e85b..066b5ed15 100644
--- a/src/zen/sessionstore/ZenWindowSync.sys.mjs
+++ b/src/zen/sessionstore/ZenWindowSync.sys.mjs
@@ -28,6 +28,7 @@ const EVENTS = [
 
   "ZenTabIconChanged",
   "ZenTabLabelChanged",
+  "TabAttrModified",
 
   "TabMove",
   "TabPinned",
@@ -1044,6 +1045,27 @@ class nsZenWindowSync {
     this.#maybeFlushTabState(tab);
   }
 
+  on_TabAttrModified(aEvent) {
+    if (!aEvent.detail.changed.includes("image")) {
+      return;
+    }
+    const tab = aEvent.target;
+    if (
+      !tab?._zenContentsVisible ||
+      !tab?._zenPinnedInitialState ||
+      tab._zenPinnedInitialState.image
+    ) {
+      return;
+    }
+    let image = tab.getAttribute("image") || tab.ownerGlobal.gBrowser.getIcon(tab);
+    this.#runOnAllWindows(null, (win) => {
+      const targetTab = this.getItemFromWindow(win, tab.id);
+      if (targetTab) {
+        targetTab._zenPinnedInitialState.image = image;
+      }
+    });
+  }
+
   on_ZenTabIconChanged(aEvent) {
     if (!aEvent.target?._zenContentsVisible) {
       // No need to sync icon changes for tabs that aren't active in this window.
diff --git a/surfer.json b/surfer.json
index 524800d0b..6e4029ff7 100644
--- a/surfer.json
+++ b/surfer.json
@@ -40,7 +40,7 @@
       "brandShortName": "Twilight",
       "brandFullName": "Zen Twilight",
       "release": {
-        "displayVersion": "1.18t",
+        "displayVersion": "1.19t",
         "github": {
           "repo": "zen-browser/desktop"
         }