[MC-126458] Redstone acting differently based on location in world

Building the same redstone contraption in different places sometimes leads to timing working out differently in one.

In the example pics provided, the first contraption has a torch that flashes on for one tick, but in the second, the torch does not flash, despite being identical in every way except world location.

Also included is the world download. Machine "A" works as intended. Machine "B" is a perfect copy and yet functions differently, causing it to not work.

Linked issues

duplicates 1

MC-11193 The order in which powerable blocks (e.g. redstone dust blocks) along a wire are powered or de-powered is not clearly defined and causes a non-deterministic behavior for redstone contraptions Open

Attachments

Redstone.zip

Comments 4

maggstrom 2018-02-27T20:36:51Z

I've downloaded your save and tested the machines. Couldn't find any difference. Still, the second one didn't work.
There seem to be quite a lot of issues related to pistons and the blockupdates of surrounding blocks recently.
You could leave a comment about your case in the comment section of the original ticket: MC-123311

Thomas Wood 2018-02-27T21:21:00Z

Thanks! Glad it was reproducible. Commented on the original. Sad to see there are so many problematic edge cases with redstone.

tryashtar 2018-02-27T22:21:09Z

Summary sounds like duplicate of MC-11193

ampolive 2021-07-23T14:09:25Z

Can confirm in 1.17.1, but I agree that this looks like a duplicate of MC-11193.