Manual testing - render-qml-to-texture displays white screen and crashes

The manual test render-qml-to-texture does not work properly. It will first display a white screen, and then an assert error occurs. The manual test will crash thereafter, if you choose to ignore the assert error.

The application output for this manual test:

• QQmlComponent: Component is not ready
• Qt3D.Renderer.RHI.Backend: Initializing RHI with DirectX backend
• QThread: Destroyed while thread is still running