Since it can be reproduced with gnome-session-quit... although I don't think it's the root issue, since it also happens with other dialogs of the same style (keyboard shortcuts for one). I don't know which package would be responsible for that.
** Package changed: ubuntu => gnome-session (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/1369971 Title: unity style dialogs sometimes not clickable (keyboard shortcuts, shutdown, ...) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-session/+bug/1369971/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs