QVulkanWindow freezes until swapchain recreation on macOS

[braernoch]

Issue is reproducible with "hellovulkantriangle" example in all tested Qt versions: 6.5.3, 6.8.0, 6.8.1, 6.9.0.
Using Vulkan 1.3.296 with bundled MoltenVK.
On macOS Sequoia 15.1.

To reproduce:

1. Recompile Qt source with vulkan enabled.
2. Compile and run hellovulkantriangle example.
3. Wait for triangle to freeze. Moving the cursor over other applications or to another screen accelerates hang.
4. Resize the example window to unfreeze the triangle (recreates swapchain).
5. Wait for it to freeze again.

Additional details on my original QtForums post wherein I show that Xcode shows that the MTLDrawable Present is updating normally but not displaying updates: https://forum.qt.io/topic/160556/qvulkanwindow-freezes-until-window-resize-on-macos-only

Does anyone know what might be causing this?

[CalebS]

Bump... Still an issue for me as well.