This looks like something we see occasionally with radeon (and nouveau) drivers at times.
Can you please run 'lspci -k' and send the output? ** Package changed: gnome-shell (Ubuntu) => gtk+3.0 (Ubuntu) ** Also affects: mesa (Ubuntu) Importance: Undecided Status: New ** Changed in: gtk+3.0 (Ubuntu) Status: New => Incomplete ** Changed in: mesa (Ubuntu) Status: New => Incomplete ** Also affects: mutter (Ubuntu) Importance: Undecided Status: New ** Changed in: mutter (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1822075 Title: tooltips and combo boxes in webbrowsers are all garbage To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1822075/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs