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  1. Minecraft: Java Edition
  2. MC-136442

Blocks of giant mushrooms don't send block updates after growing

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    • Icon: Bug Bug
    • Resolution: Fixed
    • Minecraft 1.14.1 Pre-Release 1
    • Minecraft 1.13.1, Minecraft 1.13.2, Minecraft 18w43c, Minecraft 18w45a, Minecraft 18w46a, Minecraft 19w06a, Minecraft 19w12b, Minecraft 19w13b, Minecraft 19w14a, Minecraft 19w14b, Minecraft 1.14
    • None
    • Confirmed
    • Redstone

      The bug

      When a mushroom grows into a giant mushroom, the blocks the giant mushroom consists of don't send block updates to adjacent blocks. Observers trigger properly though.

      This happens both with red and brown mushrooms.

      To reproduce

      1. Build the test setup seen in this screenshot:
      2. Place a red or brown mushroom on top of the podzol
      3. Use bonemeal on the mushroom until it grows
      4. The Redstone lamp won't activate:

      Code analysis

      A code analysis by Schortan can be found in this comment.

      Credit

      Discovered by docm77 in this video

        1. 2018-08-25 12-50-43.mp4
          4.80 MB
        2. 2018-08-25_11.43.06.png
          2018-08-25_11.43.06.png
          297 kB
        3. 2018-08-25_11.42.38.png
          2018-08-25_11.42.38.png
          184 kB
        4. 2018-08-25_11.42.29.png
          2018-08-25_11.42.29.png
          173 kB

            Excited Maria Lemón
            violine1101 [Mod] violine1101
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              Created:
              Updated:
              Resolved:
              CHK: