I have this same problem with the window (process multiple files) being bigger than the screen. My Mac Mini thinks. Poorly. Anyway I followed this obscure rabbit hole down to a black home screen issue and didn't see an answer. You changed the name of UXP to ~UXP (mine was empty but whatever I renamed it) then clicked out of that screen. Then in PS selected File? then Open? and in that dialog box clicked Hide Options (mine doesn't say folders) then Show...THEN WHAT?