I'm not sure if this is a Xorg bug or a Gnome Shell (Mutter) bug so let's start with both.
** Also affects: mutter (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1870512 Title: forced software cursor with PageFlip enabled triggers artifacts on screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1870512/+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