3D component is not added to Navigator when there is no View3D

Preconditions:

• 3D component added to User Assets

Steps to reproduce:

• Create a general empty project
• In Content Library - User Assets, right-click 3D asset and choose "Add instance to project"
• -> 3D model imported to the project but not added to Navigator. Was expecting it to be added under root rectangle, if no View3D exists.