Projectiles stop tracking when players move into them
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- Dominant language
- Java
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Description
Expected behavior
The projectile should keep tracking, instead of phasing to where it lands.
Observed/Actual behavior
Steps/models to reproduce
Shoot arrows while moving forward on a 1.21.8 paper server with no plugins, the arrows will desync. This bug does not happen on 1.21.8 vanilla
Plugin and Datapack List
None
Paper version
This server is running Paper version 1.21.8-11-main@a5f2f61 (2025-07-22T08:53:33Z) (Implementing API version 1.21.8-R0.1-SNAPSHOT)
You are running the latest version
Previous version: 1.21.4-DEV-25e1915 (MC: 1.21.4)
Other
Maybe related to https://github.com/PaperMC/Paper/issues/12200
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 arrow desync on Paper 1.21.8-11 with no plugins while moving forward, then compare the result with vanilla 1.21.8. Read the related issue #12200 and trace the projectile tracking path; done means arrows continue tracking players instead of phasing to their landing position.
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
- Mostly clear
- Newbie friendliness
- 42/100