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Java Edition



Release date

December 17, 2015

Snapshot for



Client (.json)
Server (.exe)

Protocol version


Data version


15w51a[1] is the forty-seventh snapshot released for 1.9, released to fix bugs and crashes.

This version was previously removed from the launcher for some time, but was added back in September 2018.


  • New gamerule spawnRadius controlling how far from the world spawn point players can spawn. Defaults to 10.



  • Water produced by melting ice now flows.


  • No longer drop music discs when /gamerule doMobLoot false is set.
Mob AI and pathfinding
  • Has been improved.

Non-mob entities[edit]

  • Will now drop their corresponding wood planks when broken.
End Crystal
  • End crystals can no longer be placed in Adventure gamemode.

World generation[edit]

  • When riding minecart, boat, pig or horse, terrain will now normally generate.


Frost Walker enchantment
  • No longer frosts water blocks that do not have an air block above.
Spectator Mode
  • A spectator is no longer able to open a chest where the loot has not been generated yet. They are given the message: "Unable to open. Loot not generated yet."
Status effects
A comparison of the glowing effect on an ender dragon before and after this snapshot.
  • Glowing Status effect now outlines players and mobs more exactly, arrows stuck in them or items held and transparencies will now be obeyed.

Command format[edit]

  • Using /gamerule to set a gamerule will now report the change: “Game rule <gamerule> has been updated to <value>.”


22 issues fixed
From released versions before 1.9
  • MC-3564 – Debug message “Unable to locate Sign at (x, y, z)” left inside Minecraft client.
  • MC-13046 – Certain supported characters glitch out, clearing out lines of text.
  • MC-51725 – Gamerule doMobLoot does not affect the dropping of music discs.
  • MC-69072/worldborder warning distance/time throws an error when used without arguments.
  • MC-73886 – Villagers don’t recognize blocked doors correctly.
  • MC-75256spawn-protection is also spawn randomization size.
  • MC-93614 – Bats fly from creative players.
From the 1.9 development versions
  • MC-85709 – The ender dragon is incorrectly outlined when it has the Glowing effect.
  • MC-86099 – The outline of glowing guardian’s tail is bigger than the tail itself.
  • MC-89246 – When the “glowing” effect finishes on an entity it un-renders things for one frame.
  • MC-89915 – Chunks don’t load when the player is in a minecart/on a horse/pig.
  • MC-89954 – All boat types drop oak wood planks.
  • MC-90585 – Navigating on a boat wearing Frost Walker enchantment frosts the water layer below the boat.
  • MC-92915 – Items, blocks & XP orbs appear transparent and/or gray when picked up
  • MC-93503 – Inner elytra texture doesn't render while holding a skull.
  • MC-93532 – Holding items will slightly brighten an elytra being worn.
  • MC-93622 – Endermen remain hostile after switching gamemodes.
  • MC-93772 – Mobs follow player in creative and spectator mode.
  • MC-93844 – Transparent hat pixels on skull render opaque.
  • MC-93944 – Default resource pack is ordered topmost until closing and re-entering the resource pack dialogue.
  • MC-94010 – Wolves joining an attack stay aggressive on the player even after changing gamemode.
From the previous development version
  • MC-94295 – Ender dragon respawns on its own in pre-1.9 worlds.


Video made by slicedlime: