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  1. Minecraft: Java Edition
  2. MC-239899

Connected redstone does not properly upgrade from older versions

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Details

    • Bug
    • Status: Resolved
    • Resolution: Fixed
    • 21w43a, 21w44a
    • 1.18 Pre-release 2
    • None
    • Confirmed
    • Datafixer
    • Very Important

    Description

      The bug

      When upgrading an old world containing connected redstone dust to 21w43a, often, the block states of the redstone will be mixed up. This causes crosses to often appear in a chain of connected redstone, where one may expect the redstone to only have connections to neighboring redstone.

      How to reproduce

      1. Create a world in an old version (I used 1.11.2)
      2. Place redstone around, ensuring there are some connections in which only some sides are connected to other redstone (for example, a straight line)
      3. Upgrade the world to 21w43a
        Some/all redstone has converted into crosses where it should not have

      This may take a few tries to reproduce.

      Observed result

      Some/all redstone has converted into crosses where it should not have.

      Expected result

      The Redstone wouldn't be the "+" shape when converted when it isn't necessary.

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              boq [Mojang] Bartosz Bok
              markderickson [Helper] markderickson
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              Dates

                Created:
                Updated:
                Resolved:
                CHK: