Solution here: http://ubuntuforums.org/showpost.php?p=3064253&postcount=395
-- some windows do not appear in the window list https://bugs.launchpad.net/bugs/144406 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs