Entities teleport through Nether portals faster than vanilla.
Nobody has claimed this yet.
- Dominant language
- Java
- Stars
- 12.7k
- Forks
- 3.5k
- Avg merge
- 3d 13h
- Merged PRs (30d)
- 11
Description
Expected behavior
Entities require 2 ticks to be teleported by Nether portals (vanilla behavior).
Observed/Actual behavior
Teleportation occurs after stepping only 1 tick.
Steps/models to reproduce
Use /tick freeze, place a mob in the portal, then use /tick step 1 to advance until teleportation.
Plugin and Datapack List
Server Plugins (0):
There are 3 data pack(s) enabled: [vanilla (built-in)], [file/bukkit (world)], [paper (built-in)]
There are 3 data pack(s) enabled: [vanilla (built-in)], [file/bukkit (world)], [paper (built-in)]
Paper version
This server is running Paper version 1.21.4-227-ver/1.21.4@7675321 (2025-04-28T19:07:04Z) (Implementing API version 1.21.4-R0.1-SNAPSHOT)
You are running the latest version
Other
No response
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the timing difference with /tick freeze, a mob in a Nether portal, and /tick step 1, then compare the result with vanilla behavior. Trace the portal entity-teleport handling and identify why Paper completes it after one tick; done means entities require two ticks as expected.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- game-dev
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Quiet
- Clarity
- Clearly specified
- Newbie friendliness
- 58/100