A strange bug was that a permission prompt appeared during the OS setup phase (large centered window in background), blocking part of the setup window but refus

A strange bug was that a permission prompt appeared during the OS setup phase (large centered window in background), blocking part of the setup window but refusing to accept input. Each time I tried to enter my password the focus would glitch back to the large background window, which oddly could still be clicked. So I had to keep clicking grayed-out Continue buttons in the background setup window, until the desktop finally appeared and the password prompt (which was in front the whole time) would finally accept input. I mean, this is the first thing you see when you launch the OS, these are exactly the kinds of bugs that need to be found by Apple and not by users.