Datapack Codex

Java Edition 1.21.10/Development versions

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This article is reproduced from Java Edition 1.21.10/Development versions on the Minecraft Wiki. Mirrored from revision 3431203. It is licensed CC BY-NC-SA 3.0 by the Minecraft Wiki contributors — not under the Codex’s CC BY-SA 4.0, and it may not be used commercially. Edits belong upstream, not here.

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This is a list of Java Edition 1.21.10 development versions.

1.21.10 Release Candidate 1

1.21.10 Release Candidate 1 (known as 1.21.10-rc1 in the launcher) is the first and only release candidate for Java Edition 1.21.10, released on October 2, 2025.[1]

Fixes

7 issues fixed

From released versions before 1.21

  • MC-211096 – Entities in cobwebs clip through pistons.
  • MC-278182 – Items glitch inside the piston head when pushed through powder snow or cobwebs.

From 1.21.9

  • MC-301916 – The behavior of wind charges when colliding with certain blocks is different.
  • MC-302321 – Chunks do not load while the player is being teleported.
  • MC-302383 – Rooms with carpet on the floor cannot have maps in item frames placed on walls touching the floor.
  • MC-302405 – Repeating (or chain) command block with any form of /tp [player] doesn't constantly tp player to one spot.
  • Fixed an issue that caused entities on bubble columns to fly high up into the air.

Notes and references

  1. ↑ "Minecraft 1.21.10 Release Candidate 1" – Minecraft.net, October 2, 2025.

Sources