Java Edition 25w36a

Minecraft 25w36a
Edition	Java Edition
Release date	September 2, 2025
Type	Snapshot
Snapshot for	1.21.9
Downloads	Client (.json); Server
Obfuscation maps	Client; Server
Protocol version	dec: 1073742090; hex: 4000010A
Data version	4545
Resource pack format	68.0
Data pack format	86.0
Minimum Java version	Java SE 21

This page covers a development version that has an issue under certain conditions.

The game crashes when an ender chest, another player, or a spawner set to spawn mannequins is rendered in the world.

25w36a is the seventh snapshot for Java Edition 1.21.9, released on September 2, 2025.^[1] It improves several textures and visual features, adds the ability to set different world borders in different dimensions, and adds a new technical mob.

Additions

Non-mob entities

Mannequin

Added a new type of technical entity called minecraft:mannequin which can only be spawned with summon commands.
- A mannequin is a player avatar without a connected player.
- Mannequins always show an "NPC" text where a Player's below_score score would show.
- Mannequins function as living entities, like armor stands.
  - They can hold and wear equipment, have attributes & effects, take damage, etc.
- Data Fields:
  - profile - Which profile to show on the entity. This is either a Player profile (same format as a minecraft:profile component) or a Mannequin profile with the following fields:
    - texture - Namespaced ID of the skin texture to use.
      - The skin is specified relative to the textures folder and with a .png suffix.
      - e.g. entity/player/wide/steve will use the default wide Steve skin.
    - cape - Optional namespaced ID of the cape texture to use.
      - When specified, uses the same format as the texture field.
      - Omitting this field means the mannequin has no cape.
    - elytra - Optional namespaced ID of the elytra texture to use.
      - When specified, uses the same format as the texture field.
      - Omitting this field means the mannequin uses the cape texture, or if that is also omitted, the default elytra texture when wearing elytra.
    - model - Optional model type, one of wide and slim.
      - If omitted, wide is used.
  - hidden_layers - List of outer skin layers to hide.
    - Valid entries: cape, jacket, left_sleeve, right_sleeve, left_pants_leg, right_pants_leg, hat.
  - main_hand - Which hand is the main hand of the mannequin.
    - One of left and right.
- This entity highly resembles the Mob entity removed long ago in Beta 1.2, as it is has a player skin and has no movement AI.

Changes

Blocks

Copper lantern and copper torch

Adjusted the colors to make them more discernible to color blind players.

Shelf

Powered shelves can now only connect to other powered shelves facing the exact same direction.

General

Data pack

The pack format version is now 86.0.

End flash

While the ender dragon fog effect is active, the flash source in the sky is not visible and the brightness of the light affecting the world is reduced.

Key binds

Multiple key binds that have the same key assigned to them can now work together, while before only one would work.
- For example, it's now possible to bind the d key to Jump and Strafe Left, to jump and strafe left at the same time.
- The red warning for assigning the same key to multiple key binds is changed to yellow.
Added a Spectator category in the key binds screen, alongside the pre-existing Highlight Players key bind.
The spectator hotbar menu key can now be rebound.

Particles

dragon_breath now optionally takes a power parameter (float, default 1.0), which is multiplied onto its initial velocity, after all randomness.
instant_effect and effect now optionally take power (float, default 1.0) and color (rgb, default 0xFFFFFF) parameters.
flash now requires a color parameter (argb).

Rendering

Particles outside of players view are not rendered anymore, which provides a performance improvement in some cases.

Resource pack

The version is now 68.0.

Server Code of Conduct

Formatting codes are now stripped from code of conduct files.

Shaders

The following unused shaders have been removed:
- core/position_color_lightmap.vsh
- core/position_color_lightmap.fsh
- core/position_color_tex_lightmap.vsh
- core/position_color_tex_lightmap.fsh
Minor change to uv calculations in the minecraft_sample_lightmap function in the core/terrain.vsh program.

UI

Double-clicking a word in edit box now selects it.

World border

The world border is now dimension-specific.
- This means that each dimension can have its own world border size, position, etc.

Fixes

58 issues fixed

From released versions before 1.21

MC-223142 – Player can move while spectating a marker.
MC-225088 – Overworld surface is darker than before on low brightness.
MC-234737 – Typo in exception message: "EmtyPoolElement".
MC-236508 – The title within the "Add Server" menu is displayed as "Edit Server Info".
MC-237590 – The word "chunks" is improperly capitalized within the render and simulation distance sliders.
MC-238273 – "Locked by another running instance of Minecraft" lacks punctuation.
MC-249205 – "minecraft.used:minecraft.potion" increases by a value of two when using water bottles to create mud in creative mode.
MC-250062 – Several strings throughout the game contain comma splices.
MC-250193 – Server log does not use the string representation of a player's GameProfile on a disconnect during encryption.
MC-254668 – Pressing Escape on the death screen's title screen warning respawns the player.
MC-257792 – Output slot for trading menu is off-center.
MC-258191 – Root system feature allows hanging root vertical span of 0, causing error.
MC-259347 – Height limit warning message is shown when right-clicking the top of a block at the build height limit with a bucket.
MC-262370 – Some multiplayer strings are untranslatable.
MC-264962 – Strings that contain two inputs for a given action have inconsistent spacing and apostrophes.
MC-265807 – Mobs don't drown if their Air NBT is less than -19.

From 1.21.3

MC-278435 – Mushroom Fields biome doesn't generate pumpkin patches despite being specified in vanilla datapack.

From 1.21.4

MC-277975 – The first line of the command execution warning in an item's tooltip is missing punctuation.
MC-279123 – Some strings that reference Minecraft Realms use inconsistent or missing verb forms.
MC-279153 – Some strings that mention the base values of attributes are missing articles.
MC-279173 – The "chat.disabled.invalid_command_signature" string is missing an article before the word "Command".
MC-279174 – The "gamerule.spawnChunkRadius.description" string is missing an article before the word "Amount".
MC-279175 – Some multiplayer disconnection strings are missing articles and demonstratives.
MC-279176 – The "gamerule.commandModificationBlockLimit.description" string is missing an article before the word "Number".
MC-279212 – Some narration strings are missing articles and possessive determiners.

From 1.21.5

MC-295829 – Test instance block GUI uses "Batch" instead of "Environment".

From 1.21.6

MC-298605 – When creating a Water World superflat world, the player spawns at the bottom of the sea.
MC-299105 – Tears and Lava Chicken music disc 'desc' translations are unused.

From 1.21.8

MC-301619 – Game mode translation key is used in the console message sent when a player tries to switch their game mode without permission.

From the 1.21.9 development versions

MC-300055 – You get the advancement Wax On for changing the pose of a Copper Golem Statue while holding Honeycomb.
MC-300088 – Items placed by a copper golem in a double chest do not update redstone comparators reading the right side of the double chest.
MC-300109 – Lightning bolt does not remove oxidation from the lightning rod.
MC-300169 – The CustomName tag of a copper golem statue is not kept when mined.
MC-300192 – No darker trim for copper.
MC-300201 – Breaking a copper golem statue with a pose does not retain its pose.
MC-300416 – Copper golems' pathfinding to chests is biased to northwest.
MC-300558 – Copper golems can open locked chests without an appropriate key item.
MC-300729 – Incorrect or unusually obvious pixels on the weathered and exposed copper bars.
MC-300961 – The armor layer on husks no longer reflects their larger size compared to other humanoids.
MC-301099 – Copper chests worn on copper golems' heads are not visible.
MC-301250 – Upon exiting the gamemode switcher (F3 + F4) while viewing the credits, the player still does not resume viewing the credits and instead remains in the end in a phantom state until they relog.
MC-301258 – Copper golem statues in the walking pose have a bit of their necks poking through their arms.
MC-301259 – Shelf align_items_to_bottom in block entity data doesn't work.
MC-301261 – The right arm of the copper golem statue isn't connected to its body.
MC-301276 – The hand animation no longer plays when shearing copper golems.
MC-301277 – Item frames with maps and paintings cannot share a corner anymore.
MC-301278 – The code of conduct screen renders carriage return characters.
MC-301283 – Sprint and sneak input can get 'stuck' if a screen is opened right as the input is pressed.
MC-301310 – The “Transfer Now” button in the realms menu renders outside the selection box.
MC-301312 – You cannot begin to use items while looking at copper golems.
MC-301324 – Sitting copper golem statue nose is rotated incorrectly.
MC-301330 – Malicious server can force client to remain stuck on code of conduct screen.
MC-301374 – Evokers can now spawn in Peaceful difficulty.

From the previous development version

MC-301519 – Trying to use a command block while the "enableCommandBlocks" gamerule is set to false says "Command blocks are not enabled on this server" even if you're not on a server.
MC-301523 – Some gamerule description strings consist of inconsistent concluding punctuation, redundantly include “or not”, and are grammatically incorrect.
MC-301524 – The block breaking animation on banners now amplifies with each pattern applied.
MC-301546 – Bells do not display ringing animation when another bell is nearby.
MC-301577 – Block light sources produce shadows around themselves under skylight.

Videos

Videos made by Slicedlime:

References

↑ "Minecraft Snapshot 25w36a" – Minecraft.net, September 2, 2025.

Navigation

[1] "Minecraft Snapshot 25w36a" – Minecraft.net, September 2, 2025.

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