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  1. Minecraft: Java Edition
  2. MC-114461

Lava bucket emptied and empty bucket filled with water lose NBT data in furnace


    • Icon: Bug Bug
    • Resolution: Unresolved
    • None
    • Minecraft 1.11.2, Minecraft 17w06a, Minecraft 1.12.1, Minecraft 1.13.1, Minecraft 1.13.2, Minecraft 19w12b, Minecraft 19w13b, Minecraft 19w14a, Minecraft 19w14b, 1.15.2, 20w08a, 20w20b, 20w21a, 20w51a, 1.16.5, 21w06a, 21w08b, 1.17, 1.19, 1.19.2, 22w42a
    • Confirmed
    • (Unassigned)

      The bug

      Buckets which get modified in a furnace lose their NBT data. Lava buckets can be used as fuel and turn into empty buckets and empty buckets can be used to collect the water when drying a sponge.

      How to reproduce

      1. Place a furnace and put a smeltable item in it
      2. Put a named lava bucket as fuel in it
        /give @p minecraft:lava_bucket{display:{Name:"{\"text\":\"Named Lava Bucket\"}"}}
      3. Hover over the created empty bucket
        You will see that it has no name anymore

      Code analysis

      Based on 1.11.2 decompiled using MCP 9.35 rc1

      The methods net.minecraft.tileentity.TileEntityFurnace.update() (lava bucket → empty bucket) and net.minecraft.tileentity.TileEntityFurnace.smeltItem() (empty bucket → water bucket) create a new item stack.

            Unassigned Unassigned
            marcono1234 [Mod] Marcono1234
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