I was switch from fullscreen mode to window and when the game was switched to windowed mode, the window was not centered.
This causes a presentation issue and looks bad. There is a workaround through user32.dll but only works on Windows.
There should be the ability to move or center the game window via script like:
Screen.SetPosition(x, y) should move the game window at x,y
Screen.Center() should move the game window to the screen's center
and should work for platforms that support a windows interface like Windows, Mac and Linux, others should just ignore these functions