From b133be92348ef39b4f4bba36394d708a8135d0ae Mon Sep 17 00:00:00 2001
From: Bradley Bennett <bbennett@keepersecurity.com>
Date: Tue, 17 Feb 2026 20:39:42 -0500
Subject: [PATCH] GUACAMOLE-2222: After browser blur & focus, mouse events not
 generated (keyboard events are).

---
 .../frontend/src/app/clipboard/services/clipboardService.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/guacamole/src/main/frontend/src/app/clipboard/services/clipboardService.js b/guacamole/src/main/frontend/src/app/clipboard/services/clipboardService.js
index 52ca83a3e..a7e0f3d7e 100644
--- a/guacamole/src/main/frontend/src/app/clipboard/services/clipboardService.js
+++ b/guacamole/src/main/frontend/src/app/clipboard/services/clipboardService.js
@@ -619,7 +619,11 @@ angular.module('clipboard').factory('clipboardService', ['$injector',
         $rootScope.$broadcast('clipboardSyncInProgress', true);
         getLocalClipboard().then(function clipboardRead(data) {
             return service.setClipboard(data);
-        }, angular.noop);
+        }, function clipboardReadFailed() {
+            // Clipboard sync state must be cleared on failure so that
+            // handleMouseEvents(e) won't be blocked.
+            $rootScope.$broadcast('clipboardSyncInProgress', false);
+        });
     };
 
     return service;