There is an exploit in the KB nemo mini game that is making a rather unpleasant time for the community involving the 1 block ledge and any mount allowing you to enter the arena with you not being able to get hit and allowing you to be mischievous around the arena by hitting people off without being able to be hit
How it is done I don’t want to say but you can glitch through the 1 block wall/opening with a mount