diff --git a/src/zen/common/styles/zen-theme.css b/src/zen/common/styles/zen-theme.css
index 2e50320f5..806ec8c33 100644
--- a/src/zen/common/styles/zen-theme.css
+++ b/src/zen/common/styles/zen-theme.css
@@ -235,6 +235,10 @@
   @media (-moz-windows-mica) or (-moz-platform: macos) or ((-moz-platform: linux) and -moz-pref('zen.widget.linux.transparency')) {
     background: transparent;
     --zen-themed-toolbar-bg-transparent: transparent;
+
+    @media (-moz-windows-mica) and (not (-moz-pref('widget.windows.mica.toplevel-backdrop', 1))) and (not (-moz-pref('widget.windows.mica.toplevel-backdrop', 2))) {
+      --zen-themed-toolbar-bg-transparent: rgba(255, 255, 255, 0.2);
+    }
   }
 
   &,
diff --git a/src/zen/folders/ZenFolders.mjs b/src/zen/folders/ZenFolders.mjs
index 4a5df0542..162c258c1 100644
--- a/src/zen/folders/ZenFolders.mjs
+++ b/src/zen/folders/ZenFolders.mjs
@@ -1265,6 +1265,11 @@
         }
       }
 
+      if (group.activeTabs.length === 0) {
+        group.removeAttribute('has-active');
+        this.updateFolderIcon(group, 'close', false);
+      }
+
       this.on_TabGroupCollapse({ target: group, forCollapseVisible: true }).then(() => {
         if (selectedTab) {
           selectedTab.style.removeProperty('--zen-folder-indent');
diff --git a/src/zen/tabs/zen-tabs/vertical-tabs.css b/src/zen/tabs/zen-tabs/vertical-tabs.css
index 71a984163..773e8ead5 100644
--- a/src/zen/tabs/zen-tabs/vertical-tabs.css
+++ b/src/zen/tabs/zen-tabs/vertical-tabs.css
@@ -1436,6 +1436,7 @@
   border: none;
   padding: 0;
   outline: none !important;
+  border-radius: 0;
 }
 
 /* ==========================================================================
diff --git a/src/zen/workspaces/ZenWorkspace.mjs b/src/zen/workspaces/ZenWorkspace.mjs
index c162eddd4..3b8f8e8d8 100644
--- a/src/zen/workspaces/ZenWorkspace.mjs
+++ b/src/zen/workspaces/ZenWorkspace.mjs
@@ -6,9 +6,9 @@
     static get markup() {
       return `
         <vbox class="zen-workspace-tabs-section zen-current-workspace-indicator" flex="1" context="zenWorkspaceMoreActions">
-          <hbox class="zen-current-workspace-indicator-icon"></hbox>
-          <hbox class="zen-current-workspace-indicator-name" flex="1"></hbox>
-          <toolbarbutton class="toolbarbutton-1 chromeclass-toolbar-additional zen-workspaces-actions" context="zenWorkspaceMoreActions"></toolbarbutton>
+          <hbox class="zen-current-workspace-indicator-icon" />
+          <label class="zen-current-workspace-indicator-name" flex="1" />
+          <toolbarbutton class="toolbarbutton-1 chromeclass-toolbar-additional zen-workspaces-actions" context="zenWorkspaceMoreActions" />
         </vbox>
         <arrowscrollbox orient="vertical" class="workspace-arrowscrollbox">
           <vbox class="zen-workspace-tabs-section zen-workspace-pinned-tabs-section" hide-separator="true">
diff --git a/src/zen/workspaces/ZenWorkspaces.mjs b/src/zen/workspaces/ZenWorkspaces.mjs
index 7662ea62b..3b8711509 100644
--- a/src/zen/workspaces/ZenWorkspaces.mjs
+++ b/src/zen/workspaces/ZenWorkspaces.mjs
@@ -1286,7 +1286,7 @@ var gZenWorkspaces = new (class extends nsZenMultiWindowFeature {
     await this.changeWorkspace(
       workspacesData.workspaces.find((workspace) => workspace.uuid !== windowID)
     );
-    this._deleteAllTabsInWorkspace(windowID);
+    await this.#deleteAllTabsInWorkspace(windowID);
     delete this._lastSelectedWorkspaceTabs[windowID];
     await ZenWorkspacesStorage.removeWorkspace(windowID);
     // Remove the workspace from the cache
@@ -1440,20 +1440,23 @@ var gZenWorkspaces = new (class extends nsZenMultiWindowFeature {
 
   // Workspaces management
 
-  _deleteAllTabsInWorkspace(workspaceID) {
-    gBrowser.removeTabs(
-      Array.from(this.allStoredTabs).filter(
-        (tab) =>
-          tab.getAttribute('zen-workspace-id') === workspaceID &&
-          !tab.hasAttribute('zen-empty-tab') &&
-          !tab.hasAttribute('zen-essential')
-      ),
-      {
-        animate: false,
-        skipSessionStore: true,
-        closeWindowWithLastTab: false,
-      }
+  async #deleteAllTabsInWorkspace(workspaceID) {
+    const tabs = Array.from(this.allStoredTabs).filter(
+      (tab) =>
+        tab.getAttribute('zen-workspace-id') === workspaceID &&
+        !tab.hasAttribute('zen-empty-tab') &&
+        !tab.hasAttribute('zen-essential')
     );
+    for (const tab of tabs) {
+      if (tab.pinned) {
+        await ZenPinnedTabsStorage.removePin(tab.getAttribute('zen-pin-id'));
+      }
+    }
+    gBrowser.removeTabs(tabs, {
+      animate: false,
+      skipSessionStore: true,
+      closeWindowWithLastTab: false,
+    });
   }
 
   moveTabToWorkspace(tab, workspaceID) {
diff --git a/src/zen/workspaces/zen-workspaces.css b/src/zen/workspaces/zen-workspaces.css
index 244d7ee9b..414bb868a 100644
--- a/src/zen/workspaces/zen-workspaces.css
+++ b/src/zen/workspaces/zen-workspaces.css
@@ -207,12 +207,14 @@
   }
 
   .zen-current-workspace-indicator-name {
-    display: block;
+    display: flex;
     white-space: nowrap;
     overflow: hidden;
     text-overflow: ellipsis;
     cursor: auto;
     font-weight: 600;
+    align-items: center;
+    margin: 0;
   }
 
   .zen-workspaces-actions {
diff --git a/surfer.json b/surfer.json
index e3d0f94f8..b8cfcca7c 100644
--- a/surfer.json
+++ b/surfer.json
@@ -19,7 +19,7 @@
       "brandShortName": "Zen",
       "brandFullName": "Zen Browser",
       "release": {
-        "displayVersion": "1.14.12b",
+        "displayVersion": "1.15b",
         "github": {
           "repo": "zen-browser/desktop"
         },