• Create new empty project
• Add QtQuick3D module in components view
• Drag View3D from components view to root rectangle in navigator

-> The cube is not visible in 3D view and material browser doesn't render the new material.

• Delete View3D
• Reset puppet (e.g. reset in 3D view)

--> Material is now visible in material browser

• Drag another View3D from components view to root rectangle in navigator

--> The cube is assigned the existing material, but it doesn't render in 3D view

• Drag a cylinder from components view to 3D scene in navigator

--> The cylinder is assigned the existing material, but it doesn't render in 3D view

Same issue when dragging View3D into 2D view.

When dragging View3D into code view, material is not assigned to the model at all.