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  1. Minecraft (Bedrock codebase)
  2. MCPE-30544

Observer doesn't detect curved rail changing direction

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • None
    • 1.17.11 Hotfix, 1.17.20.23 Beta, 1.17.20.22 Beta, 1.17.10, 1.16.210.60 Beta, 1.16.100.58 Beta, 1.16.100.57 Beta, 1.16.100.56 Beta, 1.16.100.55 Beta, 1.16.20.54 Beta, 1.16.20.53 Beta, 1.16.0.67 Beta, 1.16.0.63 Beta, 1.16.0.55 Beta, 1.16.0.53 Beta, 1.16.0.51 Beta, 1.15.0.56 Beta, 1.15.0.55 Beta, 1.15.0.54 Beta, 1.15.0.51 Beta, 1.14.30.51 Beta, 1.14.2.51 Beta, 1.14.2.50 Beta, 1.14.0.51 Beta, 1.13.3, 1.14.0.4 Beta, 1.13.1, 1.14.1 Hotfix, 1.14.0.3 Beta, 1.14.0.2 Beta, 1.14.0.1 Beta, 1.13.0.18 Beta, 1.2.9.1, 1.2.10.1, 1.5.3, 1.6.0.30 Beta, 1.7.0.9 Beta, 1.12.1, 1.13.0, 1.14.1.2 Beta, 1.14.30 Hotfix, 1.16.1, 1.16.40 Hotfix, 1.16.201 Hotfix, 1.17.30, 1.18.2 Hotfix, 1.19.31 Hotfix, 1.20.51 Hotfix, 1.21.44 Hotfix
    • Confirmed
    • Multiple
    • 135700

      Bug description

      Observers cannot detect a corner rail switching its direction. This is because the rail state change does not cause a block update, which is required for observers in Bedrock to activate. I think rail-switching should cause block updates.

      Steps to reproduce

      1. Build a rail intersection, with a corner rail placed on top of an observer whose output is facing downward into redstone wire directly below the observer.
      2. Power the corner rail using redstone. Notice that the observer doesn't activate.

        1. MCPE-30544_demonstration.webm
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        2. picture.png
          picture.png
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        3. video.mp4
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            SuperGeniusZeb Zeb
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              Created:
              Updated:
              CHK: