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  1. Minecraft: Java Edition
  2. MC-188086

Decorations and amethyst geodes get cut off on full chunk boundaries upon relog

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    • Icon: Bug Bug
    • Resolution: Fixed
    • 1.18.2 Release Candidate 1
    • 1.15.2, (35)
      1.16 Pre-release 2, 1.16 Pre-release 5, 1.16 Pre-release 8, 1.16 Release Candidate 1, 1.16, 1.16.1, 20w29a, 1.16.2 Pre-release 1, 1.16.2 Release Candidate 1, 1.16.3, 1.16.4 Release Candidate 1, 1.16.4, 20w46a, 20w48a, 20w49a, 20w51a, 1.16.5, 21w11a, 21w13a, 21w14a, 21w15a, 21w16a, 21w18a, 1.17, 1.17.1 Release Candidate 1, 1.17.1, 21w39a, 21w40a, 21w41a, 21w42a, 21w43a, 21w44a, 1.18, 1.18.1, 1.18.2 Pre-release 1
    • None
    • Confirmed
    • World generation
    • Normal

      Decorations such as trees, huge mushrooms, huge crimson/warped fungi, and amethyst geodes will generate cut off on chunk boundaries upon exiting the game.

      To reproduce:

      1. Set render distance to 12.
      2. Enter the seed 5878760421836343227.
      3. Go into "Game Rules" and set "Respawn Location Radius" to 0 (to prevent chunks from generating differently).
      4. Create the world with the above render distance, seed, and gamerule changes.
      5. When spawning into the world, don't move. Exit the world and reenter.
      6. Use the following command to see decorations getting cut off by a chunk boundary: 
        /tp @p -96.0 80 -105 -180 0

      If it somehow doesn't work, look around, and there should be broken decorations no more than 32 blocks from where you teleported.

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        4. Screen Shot 2021-04-01 at 12.15.44 PM.png
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          [MC-188086] Decorations and amethyst geodes get cut off on full chunk boundaries upon relog

          [Helper] clam lol added a comment -

          I likewise wasn't able to reproduce this in 1.18.2.

          [Helper] clam lol added a comment - I likewise wasn't able to reproduce this in 1.18.2.

          [Helper] gaspoweredpick added a comment - - edited

          I've tested it many times in 1.18.2 Release Candidate 1 and 1.18.2, and I was unable to reproduce for those versions. Can anybody else confirm? Note that the current steps to reproduce are outdated, so my method was to exit the game near a jungle, relog, and search for the issue at newly loaded chunks.

          [Helper] gaspoweredpick added a comment - - edited I've tested it many times in 1.18.2 Release Candidate 1 and 1.18.2, and I was unable to reproduce for those versions. Can anybody else confirm? Note that the current steps to reproduce are outdated, so my method was to exit the game near a jungle, relog, and search for the issue at newly loaded chunks.

          [Mod] ampolive added a comment -

          Can confirm in 21w41a.

          [Mod] ampolive added a comment - Can confirm in 21w41a.

          [Mod] ampolive added a comment -

          Can confirm in 21w40a.

          [Mod] ampolive added a comment - Can confirm in 21w40a.

          kokoloko_133 added a comment -

          Also in 21w39a

          kokoloko_133 added a comment - Also in 21w39a

          Brevort added a comment -

          I found this bug in a world generating in 1.17-pre3.

          Brevort added a comment - I found this bug in a world generating in 1.17-pre3.

          Rik Lubking added a comment -

          Chunks appear to be generated+decorated twice on exit/reload, leading to cut off resources, have been able to confirm via debugging, see: https://github.com/MinecraftForge/MinecraftForge/issues/7766#issuecomment-841545896.

          MC-224729 seems like the likely culprit and has more detail.

          Rik Lubking added a comment - Chunks appear to be generated+decorated twice on exit/reload, leading to cut off resources, have been able to confirm via debugging, see: https://github.com/MinecraftForge/MinecraftForge/issues/7766#issuecomment-841545896 . MC-224729 seems like the likely culprit and has more detail.

          user-68c81 (Inactive) added a comment -

          This affects all worldgen features, including ores and stone blobs. It happens because they are placed once, and they can't affect unloaded chunks.

          user-68c81 (Inactive) added a comment - This affects  all  worldgen features, including ores and stone blobs. It happens because they are placed once, and they can't affect unloaded chunks.

          [Helper] gaspoweredpick added a comment -

          This can also happen with amethyst geodes. I know that the conditions required to cut off a geode are the same as other decorations because above the geode, there were trees that got cut off at the exact same chunk border.

          [Helper] gaspoweredpick added a comment - This can also happen with amethyst geodes. I know that the conditions required to cut off a geode are the same as other decorations because above the geode, there were trees that got cut off at the exact same chunk border.

          W_V added a comment -

          Can confirm this for 20w51a.

          W_V added a comment - Can confirm this for 20w51a.

            Unassigned Unassigned
            gaspoweredpick [Helper] gaspoweredpick
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              Created:
              Updated:
              Resolved:
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