Affects Version/s: Minecraft 18w30b, 1.14.4
Fix Version/s: None
Environment:Linux compute0.[redacted].com 4.1.4-gentoo #1 SMP Mon Sep 21 04:48:00 EDT 2015 x86_64 Intel(R) Core(TM) i5-4430 CPU @ 3.00GHz GenuineIntel GNU/Linux
openjdk version "1.8.0_171"
Vanilla server jar.
While testing the fix for
MC-119971, I discovered a weird problem with pistons. It seems like if there's a sticky piston trying to pull at a chunk border, and the chunk on the other side of the border is unloaded, then the piston gets stuck in a permanently extended state.
This might be related to MC-89146, but in this case, the piston is getting constant updates from a pulsing redstone line right next to it on an obsidian rail.
Steps to reproduce:
- Go to
MC-119971and download the world file I provided there.
- Load that up in the latest snapshot.
- Teleport to around X=0,Z=0 and take note of the way that the pistons and slimeblock machine moves back and forth across a chunk border.
- Teleport to around X=150, get into the minecart, and AFK for a minute or two.
- Teleport back to the machine and observe that the sticky piston is stuck extended.