Thanks for the bug report. Unfortunately your graphics packages are not from Ubuntu, they are from System76. So the bug should probably be reported to them. Although I would still be curious to see a photo or video of the issue.
** Package changed: xorg (Ubuntu) => ubuntu ** Changed in: ubuntu Status: New => Invalid -- 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/2008733 Title: Window leak-through To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/2008733/+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