MC-155690Impulse Command Blocks seem to automatically run again if they are powered while cloned
The bug
I have created a moving machine that moves a relatively large structure (16x64x16) 1 chunk (16 blocks) at a time by using Command Blocks. This machine worked perfectly as intended in 1.14. However, whenever I attempt to use it in 1.14.3, the Command Blocks that move the structure (which are inside the structure themselves) automatically run again once the structure is cloned, creating a perpetually moving machine that lags out my game. My theory is that if a powered Impulse Command Block is cloned, the cloned version automatically runs again.
How to reproduce
- Enter the following command into an impulse command block:
clone ~ ~ ~ ~ ~1 ~ ~ ~5 ~
- Place a redstone block on top of the command block
→
The command block is cloned repeatedly, up until the build height limit
Expected result
The command block should only be cloned once, as the resulting copy is already in a powered state when placed.
Low
Created Issue:
Impulse Command Blocks seem to automatically run again if they are powered while cloned
I have created a moving machine that moves a relatively large structure (16x64x16) 1 chunk (16 blocks) at a time by using Command Blocks. This machine worked perfectly as intended in 1.14. However, whenever I attempt to use it in 1.14.3, the Command Blocks that move the structure (which are inside the structure themselves) automatically run again once the structure is cloned, creating a perpetually moving machine that lags out my game. My theory is that if a powered Impulse Command Block is cloned, the cloned version automatically runs again.
Environment
I am using Windows 10 with the latest version of Java.
![[Mod] violine1101](../../../data/avatars/users/92858.png){kind=small}
is duplicated by
![[Mod] tryashtar](../../../data/avatars/users/41963.png){kind=small}
is duplicated by
![[Mod] j_p_smith](../../../data/avatars/users/92851.png){kind=small}
![[Helper] Jack McKalling](../../../data/avatars/users/92859.png){kind=small}
I am using Windows 10 with the latest version of Java.
![[Mod] markderickson](../../../data/avatars/users/18946.svg){kind=small}
![[Mod] ampolive](../../../data/avatars/users/18949.svg){kind=small}
The bug
I have created a moving machine that moves a relatively large structure (16x64x16) 1 chunk (16 blocks) at a time by using Command Blocks. This machine worked perfectly as intended in 1.14. However, whenever I attempt to use it in 1.14.3, the Command Blocks that move the structure (which are inside the structure themselves) automatically run again once the structure is cloned, creating a perpetually moving machine that lags out my game. My theory is that if a powered Impulse Command Block is cloned, the cloned version automatically runs again.
How to reproduce
- Enter the following command into an impulse command block:
clone ~ ~ ~ ~ ~1 ~ ~ ~5 ~- Place a redstone block on top of the command block
→Expected result
The command block should only be cloned once, as the resulting copy is already in a powered state when placed.
![[Mod] turbo](../../../data/avatars/users/92867.png){kind=small}
relates to
Thank you for your report!
We're actually already tracking this issue in MC-155690, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.
Oh, is this about MC-155690 by chance?
![[Bot] Arisa](../../../data/avatars/users/43007.png){kind=small}
Thank you for your report!
We're tracking this issue in MC-155690, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
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Also affects 1.14.4. I also have similar machines that worked in 1.12.2 and all 1.13 versions and 1.14.0. I went through the snapshots one by one verifying exactly when it started. The first version with the issue is 1.14.1 Pre-Release 1. Something changed between 1.14.0 and 1.14.1 Pre-Release 1.
Easy way to repro:
/setblock ~1 ~ ~ minecraft:command_block[facing=down]{Command:"clone ~-3 ~-1 ~-3 ~3 ~2 ~3 ~-3 ~20 ~-3"}
/setblock ~1 ~1 ~ minecraft:stone_button[face=floor]
press the button, it will make multiple copies of the platform going up until it hits the height limit and you will see multiple clone outputs
It also affects 1.18.
can confirm in 1.19.4