Hi, it is a feature that should help to reduce burn in effect. A fix would be to use index, that does not touch the screen border, but has few pixels black frame around it, to allow the AoD screen shift without cutting visible elements.
AoD mode always shifts a few pixels to prevent burn in. It should constantly be shifting on both the 40 mm and 44 mm watch it just may not be as apparent in the 44 mm watch or it may start out at the same and shift later when you don’t notice it.
Since this thread is not a Galaxy Watch Developer related question it will be removed. You might want to bring this up on the Samsung products community site.