Blender Git Loki

Viewport collections visibility: Viewport and Selection options

Right now we have a different behaviour whether users click on the name or on
the visibility eye.

When clicking on the eye, it is a toggle. When clicking in the name, you
are isolating this collection (unless you use shift).

As for the UI I tried using separator_spacer, but it was more work than
worth. A lot of sub panels, and LEFT/RIGHT alignment work just fine.