System Information
Short description of error
I find that pressing 'Ctrl G' in Object Mode actually links the selected objects to a new collection, but the collection doesn't link to the scene!
I think it should behave like what it is in the Edit Mode :generate a vertex group and link it to the object (generate a collection and link it to the scene)
So users can benefit from it.
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).