Tested with my own build with Qt 6.2

Steps to reproduce:

• Create a project
• Add QtQuick3D module
• Drag and drop a View3D on top of root Rectangle
• Drag and drop sphere on top of root Rectangle
• Click sphere in Navigator -> 3D Editor now showing Sphere scene
• Try adding/removing some module
• -> You can see quite noticeable white area flashing on the right side of 3D Editor and for a moment you might also see the other scene before switching back to the one that was chosen. See the attached recording.