To be honest I’m not even sure whether if it is the game pausing too late or the fact if the screenshot is moving the mouse to the centre but anyway.
When I take a screenshot of the game while playing, the ship moves to the centre, but this does not appear in the screenshot. However, after taking the screenshot the game seems to have paused, but the ship is in the middle.
This happens if even the slightest motion is done while the screenshot is being done. Holding the mouse-still seems to not make this happen.
Normally, the game should pause as soon as the PrintScreen button is pressed but it seems to be delayed by about 0.2sec which makes the ship to move to the centre before pausing it.