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  1. Minecraft: Java Edition
  2. MC-266096

Mobs can spawn on oxidized or waxed copper grates

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    • Icon: Bug Bug
    • Resolution: Fixed
    • 23w45a
    • 23w43a, 23w43b, 23w44a
    • None
    • Confirmed
    • Mob spawning
    • Important
    • 1130326
    • Expansion B

      The bug

      The 23w43a changelogs say "Hostile mobs cannot naturally spawn" on copper grates. However, they spawn on oxidized and/or waxed copper grates.

      Steps to reproduce

      1. Set time to night.
      2. /fill ~-20 ~ ~-20 ~ ~ ~ minecraft:weathered_copper_grate
      3. Go up a few dozen blocks.
      4. Wait.

      Expected result

      Mobs wouldn't spawn.

      Observed result

      Mobs do spawn.

        1. 2023-10-25_15.46.20.png
          2023-10-25_15.46.20.png
          416 kB
        2. 2023-10-25_15.50.09.png
          2023-10-25_15.50.09.png
          292 kB
        3. MC-266096_1.mp4
          6.63 MB
        4. MC-266096_2.mp4
          9.39 MB

            kingbdogz [Mojang] Brandon Pearce
            ampolive [Mod] ampolive
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              Created:
              Updated:
              Resolved:
              CHK: