Andrew, do you see this bug in both Firefox and Thunderbird? If, like me, you see it more frequently in Thunderbird, the following might help. I was also hit by this (unrelated?) bug in the upgrade. https://bugzilla.mozilla.org/show_bug.cgi?id=917027
Applying the fix for that bug seems to mitigate this bug a little, although it doesn't totally fix it. I still get this bug intermittently, but it *seems* to be less frequent. The fix is: Edit > Preferences > Advanced > General > Config Editor. Search for mail.compose.max_recycled_windows, double click it, and change the '1' to '0' in the 'Enter integer value' window that pops up. -- 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