Yes, I noticed that it doesn't work with the dashboard opened. Since Hildon Desktop doesn't offer a D-Bus method for exiting the dashboard, I guess it'll have to be done by faking a button press in the top right if _MB_CURRENT_APP_WINDOW == 0xffffffff && _NET_ACTIVE_WINDOW == getDesktopWindow()

Dunno if it'll work for the second case, though

It's immune to fake button presses. Will have to instantiate a HildonAppMenu...