Sometimes 'spot' is yellow, but you still can see other players... I don't know how to explain it. And about lying deer who can move around and that stand still and move around - these are glitches, you don't have to worry about it. Also, when a deer is far away from you, sometimes it looks like they are running without legs movement.
I'm happy that you like this game c:
*I hope you'll understand my explanation...*