From MCPE-19086:
The extended state of pistons is not saved in the file, instead their state is recovered on the chunk load by ticking them with some delay.
In the screenshot shown above, the sticky piston is permanently powered and thus should never retract. But if you reload the world the piston momentarily retracts and triggers the dispenser containing a water bucket.
Original description:
When loading the world extended pistons that aren't in the same chunks has the player will retract for a second. It seems to effect 3 to 4 chunks away from the player.
Related issues
is duplicated by
MCPE-19086
Pistons forget their extended state on world reload
MCPE-19398
Pistons change statement when launch a map/world
MCPE-19647
Crops break while moving away
MCPE-19649
Pistons reactivating
MCPE-20376
Pistons are "de-activated" on join/restart, breaking ladders/signs/etc..
MCPE-21196
Saving/Loading the world causes bug with pistons
MCPE-21882
Piston Keeps Turning Off Each Time I Reenter A World
relates to
Attachments
Comments
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SuperGeniusZeb
Could you provide screenshots of the pistons that you have seen retract upon world load? It's hard to tell what is going on if we don't know what is powering the pistons. A world download would also be helpful.
SuperGeniusZeb
Confirmed to occur in 0.16.0. (Tested on Windows 10.) I was loading my redstone testing world and could hear some pistons retract as the world loaded. It happens every time I load the world. Not sure if it happens to all pistons or not. Will need to do more testing...
SuperGeniusZeb
After further testing, I have concluded that this bug is the same as MCPE-17464, where redstone components update upon world-reload. Some contraptions with pistons may update during world load and cause pistons to be momentarily unpowered, resulting in this problem. Closing this ticket as a duplicate.
SuperGeniusZeb
Reopening... I have found out that this is in fact a separate issue from MCPE-13608.
Attached screenshot & test world from MCPE-19086.
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True in 1.0.4
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True in 1.0.4
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1.0.5 affected
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1.0.5 affected
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Confirmed. 1.1.0.8 affected
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Confirmed. 1.1.0.8 affected
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This got much worse for me in 1.1 update (win-10 PC). Previously I'd have the pistons retract maybe once in every 10 world loads. Now, it happens every single time.
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This got much worse for me in 1.1 update (win-10 PC). Previously I'd have the pistons retract maybe once in every 10 world loads. Now, it happens every single time.
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1.1.1 affected win10 and honor 8
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1.1.1 affected win10 and honor 8
jigarbov
Still happening, 1.1.4
[Mojang] Mega_Spud (Jay)
Cleaning up old tickets: This ticket has not been updated recently (1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.
Quick Links:
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[Mojang] Mega_Spud (Jay)
Cleaning up old tickets: This ticket has not been updated recently (1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Feedback – 📖 Game Wiki