Tried modifying the source code of gnome-initial-setup, found that this issue cannot be reproduced, if the titlebar of the window (gis- assistant) is not set in the main (gis-driver) window.
I think this issue can be worked around in gis-assistant, but the root cause might be either gnome-initial-setup, mutter or libgtk-3 ** Also affects: gnome-initial-setup (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1924689 Title: Can see some garbage at the edge of the window after changing scale To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1924689/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs