The latest batch of updates (including compiz) have fixed this issue for me. I don't know if "invalid" is the right status for this bug, feel free to change.
** Changed in: compiz (Ubuntu) Status: Incomplete => Invalid -- Thunderbird has no window decorations https://bugs.launchpad.net/bugs/209848 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs