This appears to only happen if Firefox and Thunderbird are set to use the "System theme - auto" theme. Manually selecting either the light or dark theme seems to work around this problem.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2061298 Title: Screen corruption in Firefox and Thunderbird when using Wayland To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xwayland/+bug/2061298/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs