Hey, so I changed the creeper's mob drops using the In Control! mod so that they drop a different item, but now it will not show the correct mob drops.

The Loot I did:

[
  {
    "mob": "minecraft:creeper",
    "remove": "minecraft:gunpowder"
  },
  {
    "mob": "minecraft:creeper",
    "player": true,
    "item": "immersiveengineering:dust_sulfur",
    "itemcount": "0-2"
  }
]

Yeah, really need to get around to supporting this or just having a better grasp on runtime loot tables. Duplicate of #120