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Minecraft 1.21.6-pre1

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

2,671 names shipped in this version. Each result opens the wiki page for that thing.

Contents (6)
  1. What changed in 1.21.6-pre1
  2. New in-game text
  3. Fixes
  4. Development cycle
  5. Browse this version
  6. Neighbouring versions

Java What changed in 1.21.6-pre1

Everything below is measured by comparing the game files of 25w21a with 1.21.6-pre1 — not copied from patch notes.

New in-game text 6

KeyText
commands.datapack.create.invalid_full_nameInvalid new pack name '%s'
gui.waitingForResponse.button.inactiveBack (%ss)
gui.waitingForResponse.titleWaiting for Server
key.quickActionsQuick Actions
menu.quick_actionsQuick Actions...
menu.quick_actions.titleQuick Actions
Full comparison pageEvery registry, side by side

Fixes 26

Read from Mojang’s own release notes for 1.21.6 Pre-Release 1, published 2025-05-28. Every entry keeps its original bug ID.

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

Fixed bugs in 1.21.6 Pre-Release 1 26

  • MC-94800 URL shown in open URL dialog is not shortened
  • MC-140819 Lectern model extends past inventory slot
  • MC-200092 /setworldspawn seems to ignore the 'angle' parameter
  • MC-272825 Custom filled maps from 23w31a and earlier do not upgrade properly in later versions
  • MC-280276 Some item models can still clip into the block below when hovering on the ground
  • MC-296420 '/datapack create' can create directories with illegal names
  • MC-296431 Clipping item sprites to stay in slot makes it impossible to hide the slot for resource packs
  • MC-296458 Player heads in the inventory don't show the right skin
  • MC-297275 Players can desync from their mounts when jumping on a happy ghast
  • MC-297550 Happy ghasts don’t remain stationary correctly when players dismount them while other players are still controlling them
  • MC-297807 Clicking "Save and Quit to Title" in the dialog warning menu takes you to the server list even if the world is singleplayer or locally-hosted LAN
  • MC-297817 Newly placed paintings sometimes appear at a different position
  • MC-297848 The menu background is not shown for a short amount of time when leaving a world from a dialog
  • MC-297868 Items in the armor.body and saddle slots are not kept when dying while the game rule keepInventory is set to true
  • MC-297893 prevent_equipment_drop enchantment effect does not work with armor.body and saddle slots
  • MC-297894 /clear command does not clear armor.body and saddle slots
  • MC-297897 Players can fall through happy ghasts
  • MC-297899 FPS drops due to clouds
  • MC-297906 Running a command with a large output whilst on a dedicated server causes a kick and no logged output
  • MC-297915 The name plates of entities with an empty custom name are now rendered incorrectly
  • MC-298071 All naturally spawned zombie villagers are professionless since 25w16a
  • MC-298101 Sniffers now show the digging animation instead of the walking animation
  • MC-298116 The warning text in the confirm link screen is no longer visible
  • MC-298117 All buttons at the bottom of the Realms screen are clickable when no realm is selected
  • MC-298139 Items bigger than the size of a slot incorrectly bleed over onto other items
  • MC-298146 GUI items disappear at high screen resolutions

Development cycle

This build was part of the run-up to 1.21.6. Everything tested here landed in that release.

Minecraft 1.21.6The release this one led to

Browse this version

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Neighbouring versions

← 25w21a (previous)1.21.6-pre2 (next) →