fix: explicitly queue forced layouts (#6278)

CHANGELOG.md

@@ -45,7 +45,7 @@
 - Dev: Removed authenticated PubSub implementation. (#6158)
 - Dev: Save settings in `aboutToQuit`. (#6159)
 - Dev: Bumped deprecation cutoff to Qt 6.4.3. (#6169)
-- Dev: Use `QMetaObject::invokeMethod` to run code on a specific thread. (#6203)
+- Dev: Use `QMetaObject::invokeMethod` to run code on a specific thread. (#6203, #6278)
 - Dev: Added a `run-and-kill.sh` script to help debug crash-on-exit bugs. (#6188)
 - Dev: Refactored the `TimeoutStackStyle` enum into its own file. (#6216)
 - Dev: Refactored `Notebook`-related enums into their own file. (#6220)

src/messages/Image.cpp

@@ -250,14 +250,19 @@ void assignFrames(std::weak_ptr<Image> weak, QList<Frame> parsed)
         if (!isPushQueued)
         {
             isPushQueued = true;
-            postToThread([] {
-                isPushQueued = false;
-                auto *app = tryGetApp();
-                if (app != nullptr)
-                {
-                    app->getWindows()->forceLayoutChannelViews();
-                }
-            });
+            // We don't use postToThread here, because that would run immediately.
+            // We explicitly want to queue a callback after the current ones.
+            QMetaObject::invokeMethod(
+                qApp,
+                [] {
+                    isPushQueued = false;
+                    auto *app = tryGetApp();
+                    if (app != nullptr)
+                    {
+                        app->getWindows()->forceLayoutChannelViews();
+                    }
+                },
+                Qt::QueuedConnection);
         }
     };