diff --git a/rhodecode/model/permission.py b/rhodecode/model/permission.py
--- a/rhodecode/model/permission.py
+++ b/rhodecode/model/permission.py
@@ -517,6 +517,9 @@ class PermissionModel(BaseModel):
             self.sa.rollback()
             raise
 
+        # because we've FORCED and update here, make sure we reset all permissions cache
+        PermissionModel().trigger_permission_flush()
+
     def update_branch_permissions(self, form_result):
         if 'perm_user_id' in form_result:
             perm_user = User.get(safe_int(form_result['perm_user_id']))