SPOILERS

on halloween and yesterday i tried completing the mirror puzzle on the reverse side of the mirror and where there was supposed to be the final hand there was an empty space with nothing there. i really want to complete the haunted house and get the pin for it but i'm not sure how to without the hand being there 

i was in spooky world when it happened on halloween and no amount of switching between worlds to check and see if it'd be somewhere else made it appear. then i tried it again yesterday and it still wasn't there. any help appreciated!! i love this game so much and it was my first time playing!