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  1. Minecraft: Java Edition
  2. MC-172449

/locatebiome "finds" biomes in old world which would be different if generated newly

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Details

    • Bug
    • Status: Open
    • Resolution: Unresolved
    • 20w07a, 20w15a, 1.16 Release Candidate 1, 1.16, 1.16.1, 20w29a, 1.16.2 Pre-release 1, 1.17.1, 21w43a, 1.18 Pre-release 1, 1.18 Pre-release 2, 1.18 Pre-release 8, 1.18, 1.18.1 Pre-release 1, 1.18.1
    • None
    • None
    • Confirmed
    • Commands
    • Low

    Description

      The bug

      When upgrading an older world where the world generation was different, using /locatebiome in that world might claim that it found a biome even though these chunks have already been generated in a previous version and the desired biome is therefore not there.

      How to reproduce

      1. Create a world with the following seed in any version before the 1.16 snapshots
        5365757111184314758
        
      2. Visit the chunks in the Nether near (0,0)
      3. Use the version specific steps below

      1.16

      1. Open the world in a 1.16 version
      2. Use /locatebiome in the Nether
        /execute positioned 0 0 0 run locatebiome minecraft:soul_sand_valley
        

        It claims a soul sand valley is at (0,0) even though it is not because the chunks were generated in a previous version

      1.17 & 1.18-pre1

      1. Open the world in a 1.17 or 1.18 version
      2. Use /locatebiome in the Nether
        /execute positioned 0 0 0 run locatebiome minecraft:crimson_forest
        

        It claims a crimson forest is at (0,0) even though it is not because the chunks were generated in a previous version

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              Unassigned Unassigned
              marcono1234 [Mod] Marcono1234
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              Dates

                Created:
                Updated:
                CHK: