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Minecraft Snapshot 25w37a

A new week, and a new snapshot. This one includes another big batch of bug fixes, copper golem polishing and our beloved friend can now open doors.

Happy mining!

Changes

  • OpenGL 3.3 is now required to play the game, up from 3.2. This does not change our posted Minimum Requirements

Developer’s Note: We do not expect the update to OpenGL version to affect many people, if any at all. Our posted Minimum Requirements has been OpenGL 4.0 since 2017, and OpenGL 3.3 turned 15 years old recently.

Minor Tweaks to Blocks, Items and Entities

  • Fixed a bug where breaking a Shelf while another player is interacting with it could lead to visual bugs in the player inventory
  • Copper Golems hitbox has been tweaked
    • The hitbox is now 0.49 blocks in width to be able to pathfind through narrow spaces
  • Copper Golems can now open doors
  • Test Instance Blocks now preserve error markers between world reloads
  • Ambient lighting on entities has been adjusted to be more visually in line with blocks and other parts of the game
    • The underside of flat surfaces will now be lit from that direction, instead of the opposite direction
    • This mainly affects models containing cubes that are either flat or "hollow" such as:
      • Worn armor
      • Worn Elytra
      • The outside layers on player skins
      • The ribcages of Skeletons or Skeleton Horses
      • The feet of Chickens or Frogs
      • The wings of Phantoms or the Ender Dragon
      • The fins on fish
      • And more!

Game Mode Switching

  • Switching from Spectator Mode to Creative Mode no longer causes the player to stop flying
    • Instead, flight now only gets disabled when switching game modes if the player is near the ground
      • A player is considered to be near the ground if there is a collidable surface (i.e. blocks, Happy Ghasts, boats...) within 1 block below them
    • Flight will not get disabled if the player was inside a block or collidable entity
      • This is to prevent players from suddenly falling through the ground

Developer's Note: This change is a partial revert of a bugfix from a previous snapshot. Even though the old behavior prior to the fix was unintended, the approach we took to fixing flight didn't quite land the way we wanted it to. In response to community feedback, we're trying this new approach as a less disruptive alternative.

Minecraft Server Management Protocol

  • Clients must authenticate to access the API
    • Clients should supply an Authorization bearer token header with a server specific secret
    • The secret is configured in the server properties file
      • management-server-secret=
      • The secret should be exactly 40 alphanumeric characters (A-Z, a-z, 0-9)
      • The secret will be automatically generated if the server property is empty
      • Unauthorized requests are rejected with 401 Unauthorized
  • TLS is enabled by default
    • Can be disabled in the server properties file
      • management-server-tls-enabled=false
    • Requires a keystore file to be set in the server properties file
      • management-server-tls-keystore=path/to/keystore.p12
    • The keystore file must be in PKCS12 format
    • Keystore password can be set in the following ways, in order of priority
      • Environment variable: MINECRAFT_MANAGEMENT_TLS_KEYSTORE_PASSWORD
      • JVM argument: -Dmanagement.tls.keystore.password=
      • Server property: management-server-tls-keystore-password=

Server Properties

  • Default value of management-server-port was changed from 25585 to 0, assigning an available port each time management server is started
  • Added server property management-server-tls-enabled controlling whether the Minecraft Server Management Protocol uses TLS or not
    • Defaults to true
  • Added server property management-server-tls-keystore controlling the path to the keystore file used for TLS
    • Defaults to an empty string
    • A dedicated server won't start when TLS is enabled and no keystore is provided
  • Added server property management-server-tls-keystore-password controlling the password to the keystore file used for TLS
    • Defaults to an empty string

Game Rules

  • Added spawnerBlocksEnabled game rule controlling if Spawner Blocks should be enabled or not
    • Defaults to true

Mob Spawning

  • Logic for choosing type of equipment for mobs spawning with equipment has been tweaked to add Copper as a possibility
    • The initial roll to choose a type now chooses between Leather, Copper and Gold
    • The chance to increase an armor tier has increased from 9.5% to 10.87%

Sounds

  • Some sound sliders in the Music & Sound Options now play a preview sound when adjusting the setting outside a world

UI

  • The Resource Pack and Data Pack selection screens now have a search box

Technical Changes

  • The Data Pack version is now 87.0
  • The Resource Pack version is now 69.0
  • Some previously hidden debug features have been exposed to players

Debug features

  • Some debug features that were previously removed during compilation are now preserved and can be used by players
  • Individual values can be enabled with JVM properties:
    • First, a global debug flag must be enabled with -DMC_DEBUG_ENABLED or -DMC_DEBUG_ENABLED=true
    • Then, a specific feature can be enabled, for example -DMC_DEBUG_BRAIN or -DMC_DEBUG_BRAIN=true
    • To get the list of all available debug properties, add -DMC_DEBUG_PRINT_PROPERTIES
  • Warning: this is debug code. Handle with extreme care!
    • This is an advanced feature, meant to help modders - it should not be used for normal play
    • Features not guaranteed to work as intended
    • It might crash your game or corrupt your worlds
    • Individual options might be added, changed or removed without a notice

Data Pack Version 87.0

  • Changed name of game rule enableCommandBlocks to commandBlocksEnabled

Resource Pack Version 69.0

Textures

  • Moved the result slot of gui/container/villager.png up by one pixel

Shaders & Post-process Effects

Shaders

  • A new PER_FACE_LIGHTING flag has been added to the following shaders:
    • core/entity.vsh
    • core/entity.fsh
  • When set, cardinal lighting will be computed separately for front- and back-faces
  • As we now require OpenGL 3.3, we have bumped the version of all shaders from 150 to 330

Fixed bugs in 25w37a

  • MC-220913 Parity issue: Adjusting slider in the sound settings when not being in a world does not play a sound of that category
  • MC-254052 /locate doesn't work outside build limit
  • MC-295841 Interactive collision check path is broken
  • MC-300076 Copper golems remain completely stationary while searching chests, causing them to float and making them unable to receive knockback or be pushed
  • MC-300077 Copper golems can interact with chests diagonally through solid blocks
  • MC-300299 Copper Golems can open chests that are blocked
  • MC-300723 Second armor layer is still not rendering properly on all pieces
  • MC-301294 Higher tiers of mob armor are unreasonably less common than they were before 25w31a
  • MC-301494 Falling particles no longer appear from floating sand or gravel
  • MC-301510 GUI sprites nine slice performance regression
  • MC-301531 Server Management Protocol returns wrong response for invalid method IDs
  • MC-301547 Switching from Spectator mode to Creative mode now makes you fall out of the sky
  • MC-301554 Management protocol doesn't support batched requests
  • MC-301558 Copper golems can't pathfind through thin blocks
  • MC-301563 When you have the darkness potion effect, the chat, letters and words in the pause menu, items, F3 will darken
  • MC-301564 Management protocol doesn't support string-based request IDs
  • MC-301574 The spawnMonsters game rule does not take effect when switched
  • MC-301593 Monsters can spawn from spawners with the "spawnMonsters" game rule set to false
  • MC-301599 Action key getting stuck on when entering an interface so you are unable to exit without it reopening instantly
  • MC-301620 Banner animation is not independent when two banners are rendered
  • MC-301661 Server Management Protocol prints some incorrectly formatted messages in the console
  • MC-301711 The name of the "enableCommandBlocks" game rule is inconsistent with Bedrock Edition
  • MC-301748 Striking a Lightning Rod with non-default oxidation level with Lightning keeps nearby redstone components powered
  • MC-301751 The client crashes when in the vicinity of a mannequin spawner
  • MC-301752 Mannequins with profile.model set to "wide" render as a Steve skin
  • MC-301754 The hand animation plays when right-clicking shelves with nothing in your hand
  • MC-301758 Shield model clips through shelves
  • MC-301759 Elements within the realms “Worlds” tab are not selected in order when using the TAB key
  • MC-301766 Heads and skulls appear too high when placed on shelf
  • MC-301768 Structure blocks frame is not displayed when in spectator mode
  • MC-301785 Squid ink particles are yellow
  • MC-301811 Loot from suspicious blocks does not render while brushing
  • MC-301833 Text of text_display entities is darker when "see_through" property is set to true
  • MC-301869 The specification for the minecraft:ip_bans server management method says it returns an array of players even though it returns an array of ip_ban objects
  • MC-301870 Command feedback for successful /ban and /ban-ip commands with no specified reason can't be sent to the client
  • MC-301889 Documented return type does not match for clear methods in server managment protocol
  • MC-301891 Server management method minecraft:bans/clear clears allowlist, not bans
  • MC-301899 The output slot in the trading GUI is misaligned with other slots
  • MC-301903 Dropped chests, including variants, are no longer translated upward
  • MC-301935 Chest placed on bottom of shelf despite the rest of the items arent
  • MC-301952 Conduit visual bug
Last updated: Sep 9, 2025 at 2:20 PM