I struggle to use UIs like in the image shown under "Compact Mode". I can't tell what is/isn't clickable, since there are no bevels or other visual indicators (maybe something changes on mouse-over? but that's too late to indicate that I should try mousing-over!)

Thankfully user-chrome still seems to work, so these things can be overridden (and LLMs make those overrides easier to write & maintain).