PaperMC / PaperMC/Paper

Mobs despawn when going through portal due to CB ticking all worlds

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#6,456 16 comments 0 reactions 0 assignees View on GitHub

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status: accepted type: bug version: 1.18
Dominant language
Java
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Description

Expected behavior

I expected a wither skeleton to come through the nether portal

Observed/Actual behavior

So I went to the farm and a wither skeleton spawned, so I saw it went into the nether portal and I followed it after going through the nether portal the wither skeleton was not found idk where it went

Steps/models to reproduce

this is the wither skeleton farm that I'm using
https://www.youtube.com/watch?v=VL7HkV4y3Uo&t=684s

Plugin list

No plugins I made a new server and just dragged the world folder into to test the farm

Paper version

1.17.1 #196 latest

Agreements
  • I am running the latest version of Paper available from https://papermc.io/downloads.
  • I have searched for and ensured there isn't already an open issue regarding this.
  • My version of Minecraft is supported by Paper.
Other

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce on Paper 1.17.1 build 196 with the linked wither skeleton farm and a Nether portal, using the issue's expected and observed behavior as the check. Trace the portal transition and cross-world ticking behavior implicated by the title; done means determining why the mob is missing after passage and confirming the behavior is corrected.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
game-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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