PaperMC / PaperMC/Folia

Wither roses do not drop out of mobs if wither's head has flown through the portal.

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#388 3 comments 0 reactions 0 assignees View on GitHub

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status: needs triage type: bug
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Description

Expected behavior

When killing a mob with a wither's head flying through the portal, a wither rose drops out.

Observed/Actual behavior

When killing a mob with a wither's head flying through the portal, a wither rose NOT drop out.

Steps/models to reproduce

Build a wither rose farm using portals or kill a mob with a wither's head flying through the portal.

Plugin and Datapack List

I tested it on a server without plugins and datapacks.

Folia version

This server is running Folia version 1.21.6-6-ver/1.21.6@e4b0ae9 (2025-06-29T03:17:11Z) (Implementing API version 1.21.6-R0.1-SNAPSHOT)

Other

This bug does not exist on the Paper core, it is a bug of the Folia core. I checked it on the Paper version 1.21.7.

Contributor guide

No contributing guide indexed for this repository

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

Start by reproducing the wither rose farm or portal-kill scenario on Folia 1.21.6 and comparing it with Paper 1.21.7. Trace the wither head's portal travel and mob-death drop handling; done means the affected mob drops a wither rose when killed by a wither's head through the portal.

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
35/100

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