This is also apparently seen in Unity as well. https://forum.kde.org/viewtopic.php?f=111&t=117704#p294488
As stated previously, I also tried manually downloading Thunderbird from the Mozilla website, so it's unlikely to be a problem introduced in the Ubuntu packages. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234468 Title: Keystrokes are hijacked by inactive window To manage notifications about this bug go to: https://bugs.launchpad.net/thunderbird/+bug/1234468/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs