[Bug 1234468]

[Bugzilla-g]

Andrew, do you by any chance have unclutter running?

https://forum.kde.org/viewtopic.php?f=111&t=117704&p=294916#p294912

-- 
You received this bug notification because you are a member of Mozilla
Bugs, which is subscribed to thunderbird in 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