Reflected today as I was drilling down in the Right Zone / “Media” Tab, that the “back” feature of the thumb mouse button had no effect.
Expected action for me was to traverse up in the tree as I have drilled down in the right zone.
I have not found a way to activate this as a custom feature, so I post it as a suggestion here.
Implement the “back” feature of the thumb mouse of the mouse. Behave like “Back” in a web / (windows) file browser .