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  1. Minecraft: Java Edition
  2. MC-248790

Custom structures using jigsaw blocks will not generate new pieces under Y-0

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    • Confirmed
    • Custom Worlds, World generation
    • Normal

      The bug

      When a custom structure generates with underground or uses jigsaw blocks to generate underground, the custom structure will not generate any new pieces under Y=0, it will still generate pieces under Y=0 just not any new pieces. For an example: in the first picture, the structure is cutoff below Y=0 and is not generating, resulting in a cutoff in the deepslate layer.

      I have attached a data pack that can be used to reproduce this issue below.

      How to reproduce

      1. Download the data pack provided
      2. Create a new world with the seed -8285837402283326843
      3. Use /locate ms:catacombs and teleport to the location provided
      4. Go to the bottom floor of the structure and notice how no bottom paths are generated under Y=0 resulting in a cutoff effect.

        1. Example.zip
          643 kB
        2. 2022-02-26_13.20.39.png
          2022-02-26_13.20.39.png
          379 kB
        3. 2022-02-26_13.21.32.png
          2022-02-26_13.21.32.png
          390 kB
        4. 2022-02-26_13.20.57.png
          2022-02-26_13.20.57.png
          1.48 MB
        5. 2022-02-26_13.21.10.png
          2022-02-26_13.21.10.png
          1.80 MB
        6. 2022-02-26_13.20.45.png
          2022-02-26_13.20.45.png
          2.22 MB

            Unassigned Unassigned
            Flashbulb Flashbulb
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              Created:
              Updated:
              Resolved:
              CHK: