Inventory clear when starting a dungeon

So i have "KeepInventoryOnEnter: true" in the default-config aswell as in the map-config. Im not using multiverse-inventories and it still clears my inventory when joining a dungeon and after leaving the dungeon it overrides the old inventory. I picked up some items while in the dungeon and i dont lose these when leaving the dungeon. So the inventory only gets cleared when joining a dungeon.

Im using the Dev Build 67