[Qt 6.3] Loader3D content vanishes from 3D edit view if another node is added to scene

• Open the attached project and Screen01.ui.qml
• Add a cube under scene node

--> The sphere that is loaded using Loader3D vanishes from 3D editor. This doesn't happen with QDS built against Qt 6.2.2, but happens with Qt 6.3.

 The sphere will still be visible on form editor.

The puppet must be reset to make that loader work again.