I've just experienced this bug as well. Ran pkill gnome-panel and the problem was solved. After I initially tried to press escape, couldn't do anything with that "Force quit" window - it just got in the way.
-- Force quit applet doesn't remove modal window when pressing <ESC> https://bugs.launchpad.net/bugs/59143 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