Material preview not showing in the Material Browser, if material is on the model

Tested with QDS 4.1 snapshot 2 Built on Apr 19 2023 02:31:43

1. Create a new 3D project with target Qt 6.5
   1. When the project is created, the preview of the material "Default Material" in the Material Browser -view is not seen
2. Create a new material
3. Drag and drop the new material on to the model in the Navigator
4. Change the material type of the "Default Material" -material
   1. Now the "Default Material" becames visible in the Material Browser -view, but the new material, which is on the model, because invisible.

See the video for visual performation of the bug:

qtdesignstudio_SEaOeG70lc.mp4