TBH my anecdotes are probably somewhat out-of-date; last time I was looking into this was back when single-window mode was a controversial idea, being rejected

TBH my anecdotes are probably somewhat out-of-date; last time I was looking into this was back when single-window mode was a controversial idea, being rejected for years, with users who requested it being told "it's not our fault that your window manager sucks, just switch to a window manager which handles multi-window mode elegantly" (which at the time excluded users of windows, osx, and most mainstream linux distros :P)