From this Multiple Screen tutorial:
I think it should be mentioned in the tutorial, when you use:
Unbounded scrolling: No -> the game canvas always appear on top-left corner
Unbounded scrolling: Yes -> the game canvas appear in the middle of window (which usually what most people want)
I spend my whole afternoon trying to figure out how to center my canvas in Full Screen Mode (because the default Unbounded scrolling is set to No).
btw is this intended to work this way ?