diff --git a/src/browser/components/tabbrowser/content/tabs-js.patch b/src/browser/components/tabbrowser/content/tabs-js.patch
index f168b3737..3f0fd1ff9 100644
--- a/src/browser/components/tabbrowser/content/tabs-js.patch
+++ b/src/browser/components/tabbrowser/content/tabs-js.patch
@@ -1,5 +1,5 @@
 diff --git a/browser/components/tabbrowser/content/tabs.js b/browser/components/tabbrowser/content/tabs.js
-index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd0698e189659 100644
+index c7557dad38db9ef02b981c46de9595df77cb67db..f45ecacd23179f06a436d5f3d372b536322388ea 100644
 --- a/browser/components/tabbrowser/content/tabs.js
 +++ b/browser/components/tabbrowser/content/tabs.js
 @@ -44,6 +44,9 @@
@@ -157,7 +157,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
            gBrowser.loadTabs(urls, {
              inBackground,
              replace,
-@@ -1541,6 +1568,16 @@
+@@ -1541,6 +1568,17 @@
        }
        this.#resetTabsAfterDrop(draggedTab.ownerDocument);
  
@@ -168,13 +168,14 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
 +          return;
 +        }
 +      } else if (dt.mozUserCancelled) {
++        gZenViewSplitter.onBrowserDragEndToSplit(event, true);
 +        if (gZenViewSplitter._lastOpenedTab) gZenViewSplitter._lastOpenedTab._visuallySelected = false;
 +      }
 +
        if (
          dt.mozUserCancelled ||
          dt.dropEffect != "none" ||
-@@ -1707,7 +1744,6 @@
+@@ -1707,7 +1745,6 @@
  
        this.toggleAttribute("overflow", true);
        this._updateCloseButtons();
@@ -182,7 +183,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
  
        document
          .getElementById("tab-preview-panel")
-@@ -1765,7 +1801,7 @@
+@@ -1765,7 +1802,7 @@
      }
  
      get newTabButton() {
@@ -191,7 +192,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
      }
  
      get verticalMode() {
-@@ -1781,6 +1817,7 @@
+@@ -1781,6 +1818,7 @@
      }
  
      get overflowing() {
@@ -199,7 +200,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
        return this.hasAttribute("overflow");
      }
  
-@@ -1789,31 +1826,51 @@
+@@ -1789,31 +1827,51 @@
        if (this.#allTabs) {
          return this.#allTabs;
        }
@@ -267,7 +268,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
      }
  
      /**
-@@ -1880,29 +1937,23 @@
+@@ -1880,29 +1938,23 @@
  
        let elementIndex = 0;
  
@@ -306,7 +307,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
          }
        }
  
-@@ -1914,6 +1965,7 @@
+@@ -1914,6 +1966,7 @@
      _invalidateCachedTabs() {
        this.#allTabs = null;
        this._invalidateCachedVisibleTabs();
@@ -314,7 +315,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
      }
  
      _invalidateCachedVisibleTabs() {
-@@ -1929,8 +1981,8 @@
+@@ -1929,8 +1982,8 @@
      #isContainerVerticalPinnedGrid(tab) {
        return (
          this.verticalMode &&
@@ -325,7 +326,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
          !this.expandOnHover
        );
      }
-@@ -1946,7 +1998,7 @@
+@@ -1946,7 +1999,7 @@
  
        if (node == null) {
          // We have a container for non-tab elements at the end of the scrollbox.
@@ -334,7 +335,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
        }
  
        node.before(tab);
-@@ -2041,7 +2093,7 @@
+@@ -2041,7 +2094,7 @@
            // There are separate "new tab" buttons for horizontal tabs toolbar, vertical tabs and
            // for when the tab strip is overflowed (which is shared by vertical and horizontal tabs);
            // Attach the long click popup to all of them.
@@ -343,7 +344,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
            const newTab2 = this.newTabButton;
            const newTabVertical = document.getElementById(
              "vertical-tabs-newtab-button"
-@@ -2139,8 +2191,10 @@
+@@ -2139,8 +2192,10 @@
       */
      _handleTabSelect(aInstant) {
        let selectedTab = this.selectedItem;
@@ -354,7 +355,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
        selectedTab._notselectedsinceload = false;
      }
  
-@@ -2149,7 +2203,7 @@
+@@ -2149,7 +2204,7 @@
       * @param {boolean} [shouldScrollInstantly=false]
       */
      #ensureTabIsVisible(tab, shouldScrollInstantly = false) {
@@ -363,7 +364,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
        if (arrowScrollbox.overflowing) {
          arrowScrollbox.ensureElementIsVisible(tab, shouldScrollInstantly);
        }
-@@ -2288,6 +2342,16 @@
+@@ -2288,6 +2343,16 @@
        when the tab is first selected to be dragged.
      */
      #updateTabStylesOnDrag(tab) {
@@ -380,7 +381,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
        let isPinned = tab.pinned;
        let numPinned = gBrowser.pinnedTabCount;
        let allTabs = this.ariaFocusableItems;
-@@ -2540,7 +2604,7 @@
+@@ -2540,7 +2605,7 @@
          return;
        }
  
@@ -389,7 +390,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
  
        let directionX = screenX > dragData.animLastScreenX;
        let directionY = screenY > dragData.animLastScreenY;
-@@ -2549,6 +2613,8 @@
+@@ -2549,6 +2614,8 @@
  
        let { width: tabWidth, height: tabHeight } =
          draggedTab.getBoundingClientRect();
@@ -398,7 +399,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
        let shiftSizeX = tabWidth * movingTabs.length;
        let shiftSizeY = tabHeight;
        dragData.tabWidth = tabWidth;
-@@ -2585,8 +2651,8 @@
+@@ -2585,8 +2652,8 @@
        let lastBoundX =
          lastTabInRow.screenX +
          lastTabInRow.getBoundingClientRect().width -
@@ -409,7 +410,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
        translateX = Math.min(Math.max(translateX, firstBoundX), lastBoundX);
        translateY = Math.min(Math.max(translateY, firstBoundY), lastBoundY);
  
-@@ -2743,13 +2809,18 @@
+@@ -2743,13 +2810,18 @@
  
        this.#clearDragOverGroupingTimer();
  
@@ -432,7 +433,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
  
        if (this.#rtlMode) {
          tabs.reverse();
-@@ -2760,7 +2831,7 @@
+@@ -2760,7 +2832,7 @@
        let screenAxis = this.verticalMode ? "screenY" : "screenX";
        let size = this.verticalMode ? "height" : "width";
        let translateAxis = this.verticalMode ? "translateY" : "translateX";
@@ -441,7 +442,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
        let tabSize = this.verticalMode ? tabHeight : tabWidth;
        let translateX = event.screenX - dragData.screenX;
        let translateY = event.screenY - dragData.screenY;
-@@ -2776,6 +2847,12 @@
+@@ -2776,6 +2848,12 @@
        );
        let lastMovingTab = movingTabs.at(-1);
        let firstMovingTab = movingTabs[0];
@@ -454,7 +455,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
        let endEdge = ele => ele[screenAxis] + bounds(ele)[size];
        let lastMovingTabScreen = endEdge(lastMovingTab);
        let firstMovingTabScreen = firstMovingTab[screenAxis];
-@@ -2790,6 +2867,11 @@
+@@ -2790,6 +2868,11 @@
        let endBound = this.#rtlMode
          ? endEdge(this) - lastMovingTabScreen
          : periphery[screenAxis] - 1 - lastMovingTabScreen;
@@ -466,7 +467,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
        translate = Math.min(Math.max(translate, startBound), endBound);
  
        // Center the tab under the cursor if the tab is not under the cursor while dragging
-@@ -2979,6 +3061,8 @@
+@@ -2979,6 +3062,8 @@
        };
  
        let dropElement = getOverlappedElement();
@@ -475,7 +476,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
  
        let newDropElementIndex;
        if (dropElement) {
-@@ -3060,7 +3144,7 @@
+@@ -3060,7 +3145,7 @@
            ? Services.prefs.getIntPref(
                "browser.tabs.dragDrop.moveOverThresholdPercent"
              ) / 100
@@ -484,7 +485,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
          moveOverThreshold = Math.min(1, Math.max(0, moveOverThreshold));
          let shouldMoveOver = overlapPercent > moveOverThreshold;
          if (logicalForward && shouldMoveOver) {
-@@ -3093,6 +3177,7 @@
+@@ -3093,6 +3178,7 @@
          // If dragging a group over another group, don't make it look like it is
          // possible to drop the dragged group inside the other group.
          if (
@@ -492,7 +493,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
            isTabGroupLabel(draggedTab) &&
            dropElement?.group &&
            (!dropElement.group.collapsed ||
-@@ -3119,20 +3204,13 @@
+@@ -3119,20 +3205,13 @@
          let isOutOfBounds = isPinned
            ? dropElement.elementIndex >= numPinned
            : dropElement.elementIndex < numPinned;
@@ -517,7 +518,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
          let groupingDelay = Services.prefs.getIntPref(
            "browser.tabs.dragDrop.createGroup.delayMS"
          );
-@@ -3140,6 +3218,7 @@
+@@ -3140,6 +3219,7 @@
          // When dragging tab(s) over an ungrouped tab, signal to the user
          // that dropping the tab(s) will create a new tab group.
          let shouldCreateGroupOnDrop =
@@ -525,7 +526,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
            !movingTabsSet.has(dropElement) &&
            isTab(dropElement) &&
            !dropElement?.group &&
-@@ -3148,6 +3227,7 @@
+@@ -3148,6 +3228,7 @@
          // When dragging tab(s) over a collapsed tab group label, signal to the
          // user that dropping the tab(s) will add them to the group.
          let shouldDropIntoCollapsedTabGroup =
@@ -533,7 +534,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
            isTabGroupLabel(dropElement) &&
            dropElement.group.collapsed &&
            overlapPercent > dragOverGroupingThreshold;
-@@ -3192,19 +3272,14 @@
+@@ -3192,19 +3273,14 @@
              dropElement = dropElementGroup;
              colorCode = undefined;
            } else if (isTabGroupLabel(dropElement)) {
@@ -561,7 +562,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
            }
            this.#setDragOverGroupColor(colorCode);
            this.toggleAttribute("movingtab-addToGroup", colorCode);
-@@ -3223,11 +3298,11 @@
+@@ -3223,11 +3299,11 @@
        dragData.dropElement = dropElement;
        dragData.dropBefore = dropBefore;
        dragData.animDropElementIndex = newDropElementIndex;
@@ -575,7 +576,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
            continue;
          }
  
-@@ -3346,12 +3421,14 @@
+@@ -3346,12 +3422,14 @@
        element?.removeAttribute("dragover-groupTarget");
      }
  
@@ -592,7 +593,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
  
        for (let item of this.ariaFocusableItems) {
          this.#resetGroupTarget(item);
-@@ -3394,16 +3471,15 @@
+@@ -3394,16 +3472,15 @@
          tab.style.left = "";
          tab.style.top = "";
          tab.style.maxWidth = "";
@@ -611,7 +612,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
        }
        let periphery = draggedTabDocument.getElementById(
          "tabbrowser-arrowscrollbox-periphery"
-@@ -3475,7 +3551,7 @@
+@@ -3475,7 +3552,7 @@
          let postTransitionCleanup = () => {
            movingTab._moveTogetherSelectedTabsData.animate = false;
          };
@@ -620,7 +621,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
            postTransitionCleanup();
          } else {
            let onTransitionEnd = transitionendEvent => {
-@@ -3639,7 +3715,7 @@
+@@ -3639,7 +3716,7 @@
      }
  
      _notifyBackgroundTab(aTab) {
@@ -629,7 +630,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
          return;
        }
  
-@@ -3748,7 +3824,10 @@
+@@ -3748,7 +3825,10 @@
      #getDragTarget(event, { ignoreSides = false } = {}) {
        let { target } = event;
        while (target) {
@@ -641,7 +642,7 @@ index c7557dad38db9ef02b981c46de9595df77cb67db..4192dc797d5f07ece57e7e9ecb0cd069
            break;
          }
          target = target.parentNode;
-@@ -3765,6 +3844,9 @@
+@@ -3765,6 +3845,9 @@
            return null;
          }
        }
diff --git a/src/zen/split-view/ZenViewSplitter.mjs b/src/zen/split-view/ZenViewSplitter.mjs
index f80455bb6..2dd3c6424 100644
--- a/src/zen/split-view/ZenViewSplitter.mjs
+++ b/src/zen/split-view/ZenViewSplitter.mjs
@@ -380,20 +380,21 @@ class nsZenViewSplitter extends nsZenDOMOperatedFeature {
     }
   }
 
-  onBrowserDragEndToSplit(event) {
+  onBrowserDragEndToSplit(event, cancelled = false) {
     if (!this._canDrop) {
       return;
     }
     const panelsRect = gBrowser.tabbox.getBoundingClientRect();
     const fakeBrowserRect = this.fakeBrowser && this.fakeBrowser.getBoundingClientRect();
     if (
-      (event.target.closest('#tabbrowser-tabbox') && event.target != this.fakeBrowser) ||
-      (fakeBrowserRect &&
-        event.clientX > fakeBrowserRect.left &&
-        event.clientX < fakeBrowserRect.left + fakeBrowserRect.width &&
-        event.clientY > fakeBrowserRect.top &&
-        event.clientY < fakeBrowserRect.top + fakeBrowserRect.height) ||
-      (event.screenX === 0 && event.screenY === 0) // It's equivalent to 0 if the event has been dropped
+      ((event.target.closest('#tabbrowser-tabbox') && event.target != this.fakeBrowser) ||
+        (fakeBrowserRect &&
+          event.clientX > fakeBrowserRect.left &&
+          event.clientX < fakeBrowserRect.left + fakeBrowserRect.width &&
+          event.clientY > fakeBrowserRect.top &&
+          event.clientY < fakeBrowserRect.top + fakeBrowserRect.height) ||
+        (event.screenX === 0 && event.screenY === 0)) && // It's equivalent to 0 if the event has been dropped
+      !cancelled
     ) {
       return;
     }