Was in the Keepers’ vault, divine area with the NPC (cant remember his name), finished the quest and were in process of ‘Escape the Keeper Vault’. Came upon the big loot chest, and items dropped and didnt have room in my inventory. I teleported to town to empty inventory, and teleported back.
The NPC is no longer there, the items on the ground from the loot chest disappeared, and there were trash mobs there that I had cleared.