no-bug: Sync upstream Firefox to version 150.0.1 (gh-13472)

src/zen/drag-and-drop/ZenDragAndDrop.js

@@ -952,6 +952,7 @@
         // Sometimes, dragend doesn't always get called when dragging
         // to different windows, see gh-8643.
         delete ownerGlobal.gZenCompactModeManager._isTabBeingDragged;
+        ownerGlobal.gZenCompactModeManager._clearAllHoverStates();
       }
       this.clearSpaceSwitchTimer();
       gZenFolders.highlightGroupOnDragOver(null);
@@ -1107,7 +1108,10 @@
         );
         for (let i = startIndex; i <= endIndex; i++) {
           let item = items[i];
-          if (!movingTabs.includes(item)) {
+          if (
+            !movingTabs.includes(item) &&
+            !(isTabGroupLabel(item) && i == startIndex)
+          ) {
             tabsInBetween.push(item);
           }
         }

src/zen/tabs/ZenPinnedTabManager.mjs

@@ -664,7 +664,7 @@ class nsZenPinnedTabManager extends nsZenDOMOperatedFeature {
   ) {
     let newIndex = dropIndex;
     let fromDifferentWindow = false;
-    movingTabs = Array.from(movingTabs || draggedTab)
+    let ownedTabs = Array.from(movingTabs || draggedTab)
       .reverse()
       .map(tab => {
         if (!gBrowser.isTab(tab)) {
@@ -700,6 +700,7 @@ class nsZenPinnedTabManager extends nsZenDOMOperatedFeature {
         }
         return tab;
       });
+    movingTabs = [...ownedTabs];
     if (fromDifferentWindow) {
       gBrowser.addRangeToMultiSelectedTabs(
         gBrowser.tabContainer.dragAndDropElements[dropIndex],
@@ -822,7 +823,7 @@ class nsZenPinnedTabManager extends nsZenDOMOperatedFeature {
     } catch (ex) {
       console.error("Error moving tabs:", ex);
     }
-    return [draggedTab, movingTabs];
+    return [draggedTab, ownedTabs];
   }
 
   onLocationChange(aBrowser, aWebProgress, aRequest, aLocationURI) {