Unfortunately it is back. I did notice this time that it happened just after waking from suspend, and I think that has been the pattern. This should be useful. Here is the xrandr output.
** Attachment added: "xrandr.txt" https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1859774/+attachment/5320968/+files/xrandr.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1859774 Title: Full screen window becomes "small" in the upper left of the screen... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1859774/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs