I take it back, it just happened again. Apparently it's intermittent. I can't determine for certain whether it happens under X, because (a) as I just noted, it's intermittent, and (b) my monitor has an entirely different issue under X, see https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1849484 .
** Changed in: gnome-shell (Ubuntu) Status: Invalid => New -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1851568 Title: monitor configuration restored incorrectly upon Wayland login To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1851568/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs