Paper: Vanilla minecart rails duplication bug

Created on 4 Jan 2017  路  13Comments  路  Source: PaperMC/Paper

Dupe works on latest build of Paper.

Tested and this works on 1.11.2 this allowed someone to dupe 1000's of rails and sell it to the shop.

How to fix this? This plugin hopefully paper can use something like this in the code to stop rails from duping.

https://www.spigotmc.org/resources/antiraildupe.27957/

incomplete bug vanilla

Most helpful comment

Could we have some brief instructions on how to perform this? Rather not watch videos about it that go for who knows how long

All 13 comments

Could we have some brief instructions on how to perform this? Rather not watch videos about it that go for who knows how long

Easiest way is to watch a video

Reproducing is easy, build something like this and start redstone repeater. Rails will duplicate.

Rails can't be sold in my shop however they can be auctioned. I'm using antirails for now to stop the duping of rails until paper fixes it.

Nope its an exploit that allows duping rails and needs to be patched.

Many servers will have this problem with rails duping also Jones you have no right to be mean to me for pointing out a problem.

Can confirm this. A similar contraption also does this for TNT. (Spitting primed tnt that will explode)

@zachbr Latest Paper Version:
https://youtu.be/am_774Jgwwc

This is fixed in 1.13 afaik

@0-x-2-2 afaik it's not fixed in 1.13 yet. Just tested the machine from the video in 1.13 pre3, still working fine.

Let's hope it won't get fixed

Unable to reproduce, version: git-Paper-210 (MC: 1.13.1)

It was fixed in 1.13

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