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Minecraft 1.21.9-pre3

Feature-complete; only bug fixes land between here and release. Full source data for this version is extracted and browsable below.

2,807 names shipped in this version. Each result opens the wiki page for that thing.

Contents (5)
  1. What changed in 1.21.9-pre3
  2. Fixes
  3. Development cycle
  4. Browse this version
  5. Neighbouring versions

Java What changed in 1.21.9-pre3

Everything below is measured by comparing the game files of 1.21.9-pre2 with 1.21.9-pre3 — not copied from patch notes.

Fixes 2

Read from Mojang’s own release notes for Minecraft 1.21.9 Pre-Release 3, published 2025-09-22. Every entry keeps its original bug ID.

2 issues fixed, read from Mojang’s own patch notes. Each entry keeps its original bug ID.

Fixed bugs in 1.21.9 Pre-Release 3 2

  • MC-301963 Copper golems cause huge lag spikes when checking chests
  • MC-301990 Copper golem statues cause culling issues when placed above certain blocks

Development cycle

This build was part of the run-up to 1.21.9. Everything tested here landed in that release.

Minecraft 1.21.9The release this one led to

Browse this version

BlocksEvery blockItemsEvery itemRecipesEvery recipeTagsEvery tag

Neighbouring versions

← 1.21.9-pre2 (previous)1.21.9-pre4 (next) →