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  1. Minecraft: Java Edition
  2. MC-213802

Copper is not upgraded correctly from pre-21w05a worlds

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    • Icon: Bug Bug
    • Resolution: Fixed
    • 21w05b
    • 21w05a
    • None
    • Confirmed
    • Datafixer
    • Very Important

      Copper blocks aren't upgraded correctly when loading a pre-21w05a world in 21w05a. Some blocks disappear, and the fully weathered copper blocks revert into the penultimate weathered block stage. This is because the blocks were renamed and the block IDs were changed, but the upgrade paths weren't adjusted to accomodate that. This also affects their item forms.

      To reproduce

      1. Load this world in 21w03a: 2021-02-03_19-53-19_Ghost Copper.zip
      2. Upgrade it to 21w05a
        → Some blocks are missing and the fully weathered blocks have jumped back a stage

        1. 21w05a.png
          21w05a.png
          485 kB
        2. 21w03a.png
          21w03a.png
          559 kB
        3. 2021-02-03_19-53-19_Ghost Copper.zip
          434 kB
        4. 2021-02-03_12.51.08.png
          2021-02-03_12.51.08.png
          794 kB

            Unassigned Unassigned
            Bobbyawesome101 Bobby N.
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            6 Vote for this issue
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              Created:
              Updated:
              Resolved:
              CHK: