Thanks for the bug report. I can't seem to reproduce the problem in 20.04 here...
Please open two Terminal windows and in one run 'top' and in the other run 'journalctl -f'. Then reproduce the bug again. While the bug is happening, do you see high CPU usage in 'top' or any messages flooding the log in the 'journalctl -f' window? Please also try disabling extensions using the 'Extensions' app in case any of those are the problem. ** Package changed: xorg (Ubuntu) => gnome-shell (Ubuntu) ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1922766 Title: UP and DOWN keys behave erratically To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1922766/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp