The latest duplicate ( Bug #87631 ) also mentions a slightly different twist on the problem: when the application popping up a logout blocking dialog is underneath another application on the same desktop, the logout blocking dialog can't be seen (nor the program selected using the window list).
-- Not obvious when logout is stalled by window on another virtual desktop https://launchpad.net/bugs/33673 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
