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  1. Minecraft (Bedrock codebase)
  2. MCPE-176872

Concrete powder disappearing when using command to replace the base of an extended piston with air.

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    • Icon: Bug Bug
    • Resolution: Cannot Reproduce
    • None
    • 1.20.41 Hotfix
    • None
    • Unconfirmed
    • Android

      When pushing a line of concrete powder with a piston, all the concrete powder in the line and around it disappeared. I do have a command block that deletes the concrete powder, but I have gotten rid of it and the bug still happens when it is gone. (In the video, nothing unintended happens other than the powder disappearing. Everything else is normal.)

       

      To Recreate:

      1. Place a 7x1x7 rectangular prism of concrete powder.
      2. Place a piston with commands next to a redstone block using the following command: /setblock X Y Z piston ["facing_direction" = 0] - Replace X Y Z with coordinates and 0 with 2, 3, 4, or 5 in order to make the piston face the correct way.
      3. (Steps 3-5 need to already be set up Repeating always active command block with the following command: /testforblocks X Y Z X Y Z X Y Z (where the first two sets of coordinates are the area where the piston will be created, and the third set is some area with only air.
      4. Have a comparator leading from the repeating command block into a repeater, which then leads into a not logic gate.
      5. Have the redstone from the not gate lead into another command block with the following command: /fill X Y Z X Y Z air (where the coordinates are the area where the piston will be created) with a tick delay of 5.

      Observed Result: All concrete powder disappears along with the piston.

      Expected Result: Only the piston disappears.

       

      This does not happen if the piston base is not deleted. I would reckon this is because the concrete powder is not updating and the piston being deleted before it's done interferes with the process. I will edit in the future to see if it the issue is resolved by increasing the tick delay in the command block mentioned in step 5.

            Dr_Crackpot Dr_Crackpot
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              Created:
              Updated:
              Resolved: