I don't have a windows laptop with touch support, so I can't really reproduce it here. Maybe the game processes those events both as touch and as mouse events and gets stuff wrong. But that's just a wild guess.
I think he's saying that the widows app requires double tap when using touch controls because the windows version expects a mouse click and the touch interface translates double taps into a mouse click.
Yes and no? The touch controls seem to behave differently inside the app. I would double click the app icon to open it and I would also tap twice. Once inside the app, however, all actions require a double tap but only a single click. I'll test with an emulator and see what happens.