Alright I've noticed after some update that protectors started protecting my opponents graveyards, which in itself is no biggie. However today I summoned a Rotling and figured I should be able to eat the Aeon Stormcaller they had in their graveyard even if they had an Aeon on the board at the time. I'm not sure if this bug goes beyond that and messes with Death Collector, Spirit Warden, or even other protectors in the graveyard, but it might be worthwhile to look into that as well. As much as it annoys me that protectors can now protect the graveyard, it does make sense, yet I should be able to target the allies in the graveyard that also have protector. The only other thing I can think of is maybe somehow the unique keyword may have had something to do with it because Aeon is unique like that ...