Trial Chamber Drop Rates Removes Dropped Gear Picked Up By Mobs

When a mob picks up an item that is dropped by a player upon their death (i.e. a sword or a chestplate) they are supposed to be almost guaranteed to drop that item when they die. When playing through a Trial Chamber however, me and my friend both died and then baby zombies picked up our loot. We killed them all but no items were ever dropped.