Backlog Multiple instances of Memory Jar effect not registering

[BillyRedLyons]

If Memory Jar is returned to play from the graveyard allowing 2 or more instances of cards exiled with Memory Jar to occur concurrently; at end of turn the cards in hand go to the graveyard, the original set of cards exiled exiled with Memory Jar are returned to hand, and each other instance of cards exiled with Memory Jar go to the graveyard. The correct resolution would be for the cards in hand to go to the graveyard and all cards exiled with Memory Jar are returned to hand.