Material disappears from 3D Editor after 3D asset import

Steps:

• Create a general empty project, qt 6.3 target
• Add QtQuick3D module
• Create new material in Material Editor
• Drag and drop two View3D's to Rectangle in Navigator
• Click View3D -> shows correctly in 3D Editor
• Click View3D1 -> shows correctly in 3D Editor
• Import some 3D Asset
• ->Cube in second scene (View3D1) disappears from 3D Editor
• -> Material preview image does not show the material anymore