You could try to move it back to the exact place it came from… But yeah, this is fixed and will be available in the next version
Hi! Our Paint is entirely developed by me (1 person).
The selection+move feature is intentionally left not implemented because you won’t be able to do it on paper traditionally. This forces you to draw it well or redraw and after a while you shouldn’t need to rely on selection/move/transform to adjust your drawings :)
The fixed move tool (by 1000px increment) is gonna be available in the next version :D