Comment 1 for bug 1462933

It's worth noting that for applications which only ever have one window (e.g. System Settings) the behaviour is even more weird because it doesn't open a new window, it just does nothing. So if System Settings (or another single-window app) is already open (but is hidden behind other windows) and you try to open the application from the Applications menu then nothing happens. Nada. Zilch. The application remains hidden. This is just massively confusing.