[MC-3155] Piston remains powered without redstone Created: 16/Nov/12  Updated: 06/Sep/15  Resolved: 12/Dec/12

Status: Resolved
Project: Minecraft: Java Edition
Component/s: None
Affects Version/s: Minecraft 1.4.4
Fix Version/s: None

Type: Bug
Reporter: Nathan Webb Assignee: Unassigned
Resolution: Duplicate Votes: 0
Labels: piston
Environment:

Windows 7


Attachments: PNG File After.png     PNG File Before.png     PNG File Bug.png    
Issue Links:
Duplicate
duplicates MC-108 Droppers, Dispensers and Pistons acti... Resolved
CHK:
Confirmation Status: Unconfirmed
Game Mode: Creative

 Description   

1 of 2 pistons remained active after all redstone wire and lamps and pistons and all other blocks around it were destroyed. I replicated this bug several times.

What I expected to happen was...:
Once the restone wire above the pistons lost power, I expected both pistons to retract

What actually happened was...:
After cutting power to the redston wire, 1 of the 2 pistons remained powered

Steps to Reproduce:
1. In the "Before" image, everything works just fine
2. In the "After" image, the piston remains active
3. In the "Bug" image, all blocks around the active piston have been destroyed. You can also see in the background that I replicated the bug with both types of piston.

Now, this was in creative mode, but I feel it is worth mentioning that when I switched over to survival mode I was able to again replicate the bug with one exception. Upon destroying an adjacent block, (after destroying all redston) the piston DID retract.



 Comments   
Comment by Tails [ 12/Dec/12 ]

Duplicate of MC-108.

Comment by user-571ee (Inactive) [ 16/Nov/12 ]

As Mustek said this is currently considered a feature and not a bug. In short: A piston is able to receive power from 2 blocks away. But it is updated only if something 1 block away changes. I know this can be very confusing. I think this report should be closed in favor of other reports.

Comment by Mustek [ 16/Nov/12 ]

This is used in Block Update Detectors (BUD-switches) and is some kind of bug turned into a feature.
Whether this will be fixed or not depends on the redstone changes currently planned for 1.5.

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