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    • Icon: Bug Bug
    • Resolution: Works As Intended
    • None
    • 1.2.5.15
    • None
    • Confirmed
    • Windows
    • 89527

      Verification builds:

      1.2.5.15 Beta

      Summary:

      Prior to 1.2 observers detecting a piston head that it was powering would form a "clock". This was incorrect behavior since observers, normally taking 1 tick to detect and output a signal, would have had it's signal ignored (as the piston head would have been retracting while receiving the pulse, therefore ignoring it). This was fixed in 1.2, perhaps as a side product of the faster observers and the instant chaining observers. It has returned in 1.2.5.15, possibly as a side effect of this bug being fixed:
      bugs.mojang.com/browse/MCPE-23947

      Steps to Reproduce:

      1. Build setup as posted in the attached videos.
      2. Turn the lever on to "prime" the setup.
      3. Turn the lever off.

      Observed Results:

      The piston retracts, but then extends and retracts ad infinitum.

      Expected Results:

      The piston retracts, ignoring the observer's pulse since it (should) be occurring at the same tick that the piston head is retracting.

      Screenshots/Videos attached:

      Yes

      Notes:

      This is a borderline case of bug/game design issue. It seems that to fix this, the observer clock linked in the bug report above must be broken, unless some special exception is made.

        1. 1-2-3 Working Setup.mp4
          1.98 MB
          MaladjustedPlatypus
        2. 1-2-5 Beta Build 3 Broken Setup.mp4
          128 kB
          MaladjustedPlatypus

            Mistahtokyo MaladjustedPlatypus
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              Created:
              Updated:
              Resolved:
              CHK: