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<code>World#spawnEntity</code> doesn't initialize passengers properly

status: acceptedDisputed bug is accepted as valid or Feature accepted as desired to be added.Disputed bug is accepted as valid or Feature accepted as desired to be added.

version: 1.21.11Game version 1.21.11Game version 1.21.11

Status: Open.

Bug

#13559 In PaperMC/Paper;

· molor opened on Jan 16, 2026

Add CopperGolemState API

status: needs triage

Status: Open.

Feature

#13558 In PaperMC/Paper;

· JakeGBLP opened on Jan 16, 2026

DialogBody + ItemStack as item crashes server

status: needs triage

version: 1.21.11Game version 1.21.11Game version 1.21.11

Status: Open.

Bug

#13555 In PaperMC/Paper;

· illyrius666 opened on Jan 15, 2026

VILLAGER AI

status: needs triage

Status: Open.

Bug

#13549 In PaperMC/Paper;

· vefariro opened on Jan 13, 2026

Client disconnect when executing commands with lots of macros

status: needs triage

version: 1.21.11Game version 1.21.11Game version 1.21.11

Status: Open.

Bug

#13548 In PaperMC/Paper;

· Seeloewen opened on Jan 12, 2026

ItemStack reference in FurnaceExtractEvent

status: needs triage

Status: Open.

Feature

#13547 In PaperMC/Paper;

· Privatech38 opened on Jan 11, 2026

Add adventure support to bukkit bossbars

status: acceptedDisputed bug is accepted as valid or Feature accepted as desired to be added.Disputed bug is accepted as valid or Feature accepted as desired to be added.

Status: Open.

Feature

#13545 In PaperMC/Paper;

· Fusezion opened on Jan 11, 2026

RegionAccessor#getMoonPhase is outdated

status: acceptedDisputed bug is accepted as valid or Feature accepted as desired to be added.Disputed bug is accepted as valid or Feature accepted as desired to be added.

version: 1.21.11Game version 1.21.11Game version 1.21.11

Status: Open.

Bug

#13542 In PaperMC/Paper;

· ShaneBeee opened on Jan 10, 2026

Adventure BossBar of Boss Entity/Raid

status: needs triage

Status: Open.

Feature

#13541 In PaperMC/Paper;

· ShaneBeee opened on Jan 10, 2026

Infinite Hanging Roots Duplication via Hoe Right-Click on Rooted Dirt + <code>BlockPlaceEvent</code> Cancellation

priority: highThis issue is either a gamebreaking bug or crash and needs to be addressed soon.This issue is either a gamebreaking bug or crash and needs to be addressed soon.

status: acceptedDisputed bug is accepted as valid or Feature accepted as desired to be added.Disputed bug is accepted as valid or Feature accepted as desired to be added.

version: 1.21.11Game version 1.21.11Game version 1.21.11

Status: Open.

Bug

#13536 In PaperMC/Paper;

· CatTeaA opened on Jan 10, 2026

Exclude copper golems from entity-activation-range limitations

status: needs triage

Status: Open.

Feature

#13528 In PaperMC/Paper;

· Wait4Mi opened on Jan 9, 2026

Optional villager breeding density cap to prevent uncontrolled entity growth and server lag

status: needs triage

Status: Open.

Feature

#13524 In PaperMC/Paper;

· qwejerrywolf opened on Jan 9, 2026