From 40080a25dc876eabd87bc8cf1dd5e38e475ce20c Mon Sep 17 00:00:00 2001
From: fen4flo <75260616+FlorianButz@users.noreply.github.com>
Date: Sun, 21 Jun 2026 15:18:02 +0200
Subject: [PATCH] gh-11245: Fix tab placement with Move Tab / Space Routing
 (gh-14324)

Fixes #11245
---
 src/zen/spaces/ZenSpaceManager.mjs | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/zen/spaces/ZenSpaceManager.mjs b/src/zen/spaces/ZenSpaceManager.mjs
index 3ba066179..52f692bbe 100644
--- a/src/zen/spaces/ZenSpaceManager.mjs
+++ b/src/zen/spaces/ZenSpaceManager.mjs
@@ -1506,19 +1506,27 @@ class nsZenWorkspaces {
         continue;
       }
 
+      const newtabPlacement = Services.prefs.getBoolPref(
+        "zen.view.show-newtab-button-top",
+        false
+      );
+      const insertElement = newtabPlacement
+        ? container.firstChild
+        : container.lastChild;
+
       if (container) {
         if (tab.group?.hasAttribute("split-view-group")) {
           gBrowser.zenHandleTabMove(tab.group, () => {
             for (const subTab of tab.group.tabs) {
               subTab.setAttribute("zen-workspace-id", workspaceID);
             }
-            container.insertBefore(tab.group, container.lastChild);
+            container.insertBefore(tab.group, insertElement);
           });
           continue;
         }
         gBrowser.zenHandleTabMove(tab, () => {
           tab.setAttribute("zen-workspace-id", workspaceID);
-          container.insertBefore(tab, container.lastChild);
+          container.insertBefore(tab, insertElement);
         });
       }
       // also change glance tab if it's the same tab