Shotcut version 21.05.01
In Size, Position & Rotate, zoom all the way down to 0.1% with the mouse wheel then zooming back up will mess up the number in the Position parameter.
In this demo I first demonstrate that zooming all the way down to 0.1% then all the way up to 1000% works fine. Then after pressing the reset button I go to the player to zoom down to 0.1% with the mouse wheel and when I try scroll to zoom in the Position numbers are thrown out of whack.