I have the weirdest problem. Software Updater will occasionally not display in Unity on 14.04. If I manually start Software Updater everything works fine, but if there are updates and the window (should) pops up, I can't access the window. I can see the little triangle next to the icon in the launcher saying there's a window, but the window is nowhere to be seen. If I right click to close it and then launch it then everything is fine.
How do I find this hidden window or figure out what the problem might be?