From 492d34a9fa4b0d94c93f6fa6d85a5a5a70126216 Mon Sep 17 00:00:00 2001
From: "mr. m" <mr.m@tuta.com>
Date: Sat, 14 Mar 2026 20:02:55 +0100
Subject: [PATCH] fix: Fixed turning
 `browser.pagethumbnails.capturing_disabled` on breaking WS, b=closes #12772,
 c=no-component

---
 src/zen/drag-and-drop/ZenDragAndDrop.js    | 4 ++++
 src/zen/sessionstore/ZenWindowSync.sys.mjs | 8 ++++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/zen/drag-and-drop/ZenDragAndDrop.js b/src/zen/drag-and-drop/ZenDragAndDrop.js
index fbe896e32..78435d5ec 100644
--- a/src/zen/drag-and-drop/ZenDragAndDrop.js
+++ b/src/zen/drag-and-drop/ZenDragAndDrop.js
@@ -1217,6 +1217,10 @@
       return true;
     }
 
+    _moveTogetherSelectedTabs() {
+      // Override the default behavior of only moving together selected tabs.
+    }
+
     // eslint-disable-next-line complexity
     #applyDragoverIndicator(event, dropElement, movingTabs, draggedTab) {
       // Doesn't show indicator when dragOverSplit
diff --git a/src/zen/sessionstore/ZenWindowSync.sys.mjs b/src/zen/sessionstore/ZenWindowSync.sys.mjs
index 2b95cf218..166fe9d19 100644
--- a/src/zen/sessionstore/ZenWindowSync.sys.mjs
+++ b/src/zen/sessionstore/ZenWindowSync.sys.mjs
@@ -909,15 +909,19 @@ class nsZenWindowSync {
             }
           );
 
-        let mySrc = await new Promise((r, re) => {
+        let mySrc = await new Promise(r => {
           const reader = new FileReader();
+          if (!browserBlob) {
+            r("");
+            return;
+          }
           reader.readAsDataURL(browserBlob);
           reader.onloadend = function () {
             // result includes identifier 'data:image/png;base64,' plus the base64 data
             r(reader.result);
           };
           reader.onerror = function () {
-            re(new Error("Failed to read blob as data URL"));
+            r("");
           };
         });