Is there any way to have a hiërarchy collapsed in a selector using the new UX?
I haven't seen anyway to do this within the new UX builder.
The only way I can suggest is to create a saved view within the model where the hierarchies levels are hidden and then use this within the new UX.
There is functionality to show and hide within cards but this only applies to the view on the grid and if it is a selector you cannot hide from it.
So I've suggested the idea here on the community: