Bunch of hotfixes

src/browser/base/content/zen-styles/zen-tabs/vertical-tabs.css

@@ -71,6 +71,10 @@
     -moz-window-dragging: no-drag;
     --zen-sidebar-action-button-width: 38px;
     padding-bottom: calc(5px + 5px); /* Taking into consideration the padding of the sidebar without being inlined */
+
+    :root[zen-sidebar-legacy="true"] & {
+      padding-top: 0 !important;
+    }
   }
   
   #TabsToolbar-customization-target {
@@ -117,7 +121,7 @@
   }
   
   .tabbrowser-tab {
-    --zen-browser-tab-icon-size: 18px;
+    --zen-browser-tab-icon-size: 16px;
     --tab-min-width: 36px;
     margin: 0 auto;
     border-radius: 8px;

src/browser/base/content/zen-styles/zen-workspaces.css

@@ -1,6 +1,6 @@
 
 #zen-workspaces-button {
-  --zen-workspaces-button-vmargin: 0.35rem;
+  --zen-workspaces-button-vmargin: 0.4rem;
   border: 1px solid var(--zen-colors-border);
   border-radius: 50px;
   width: calc(var(--zen-sidebar-action-button-width) - 5px) !important;
@@ -10,6 +10,10 @@
   justify-content: center;
   align-items: center;
   display: flex;
+
+  :root[zen-sidebar-legacy="true"] & {
+    margin-top: 0 !important;
+  }
 }
 
 #zen-workspaces-button .zen-workspace-sidebar-name {

src/browser/components/preferences/zen-settings.js

@@ -228,6 +228,26 @@ var gZenLooksAndFeel = {
     this._initializeTabbarExpandForm();
     gZenThemeBuilder.init();
     gZenMarketplaceManager.init();
+    var onLegacyToolbarChange = this.onLegacyToolbarChange.bind(this);
+    Services.prefs.addObserver("zen.themes.tabs.legacy-location", onLegacyToolbarChange);
+    window.addEventListener("unload", () => {
+      Services.prefs.removeObserver("zen.themes.tabs.legacy-location", onLegacyToolbarChange);
+    });
+  },
+
+  async onLegacyToolbarChange(event) {
+    let buttonIndex = await confirmRestartPrompt(
+      true,
+      1,
+      true,
+      false
+    );
+    if (buttonIndex == CONFIRM_RESTART_PROMPT_RESTART_NOW) {
+      Services.startup.quit(
+        Ci.nsIAppStartup.eAttemptQuit | Ci.nsIAppStartup.eRestart
+      );
+      return;
+    }
   },
 
   _initializeTabbarExpandForm() {