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  1. Minecraft (Bedrock codebase)
  2. MCPE-168391

Block state predicates in commands do not work properly (unprovided states require default value)

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • None
    • 1.20.10.20 Preview, 1.19.80.21 Preview, 1.19.70, 1.19.81 Hotfix, 1.20.0, 1.20.15 Hotfix, 1.20.51 Hotfix, 1.20.62 Hotfix, 1.21.43 Hotfix
    • None
    • Confirmed
    • Windows
    • 997772, 1133402

      The bug

      Unspecified states in block-checking commands are treated as though you specified the default value. This is fine for block-placing commands, but for block-checking commands, it's problematic.

      How to reproduce

      1. Place some acacia stairs facing all four directions
      2. Run this command:

      /fill ~-5 ~-5 ~-5 ~5 ~5 ~5 stone replace acacia_stairs["upside_down_bit":false]

      Expected result
      All stairs should be replaced with stone

      Observed result
      Only the west-facing stairs were replaced

      Notes
      This affects /execute if block as well. This is identical to MC-121690, which affected Java for a single snapshot in 2017. An equally hasty fix for bedrock would be much appreciated

            tryashtar [Mod] tryashtar
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              Created:
              Updated:
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