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{{Infobox version
|title=15w51a
|edition=Java
|image=15w51a.png
|image2=Java Edition 15w51a.png
|type=Snapshot
|date=December 17, 2015
|parent=1.9
|clienthash=764384c71c303b3e18146dd90ac8cad2550b6ffb
|jsonhash=7070c87a526910524cbec04c3e0b76759a0208f3
|serverhash=4d5f4d2111272d67f2238b83a552599b9b7ad92f
|exehash=10b74066cbbe39e0a829205278402b5d428ded19
|prevparent=1.8.9
|prev=15w50a
|next=15w51b
|nextparent=1.9.1
}}<onlyinclude>

'''15w51a''' is the forty-seventh snapshot for [[Minecraft:Java Edition 1.9]], released on December 17, 2015,<ref>{{link|url=https://www.mojang.com/2015/12/minecraft-snapshot-15w51a/|archive-url=https://web.archive.org/web/0/http://mojang.com/2015/12/minecraft-snapshot-15w51a/|title=Minecraft snapshot 15w51a|author=Searge|website=Mojang.com|date=December 17, 2015}}</ref> which fixes bugs and crashes.

==Additions==
===Command format===
'''[[Minecraft:Gamerule]]s'''
* <code>spawnRadius</code>
** Controls how far from the world spawn point players can [[Minecraft:World spawn/Multiplayer details|spawn]].
** Defaults to 10.

==Changes==
===Blocks===
'''[[Minecraft:Ice]]'''
* Water produced by melting ice now flows.

===Mobs===
'''General'''
* AI and pathfinding have been improved.

'''[[Minecraft:Creeper]]s'''
* No longer drop music discs when {{cmd|gamerule doMobLoot false}} is set.

===Non-mob entities===
'''[[Minecraft:Boat]]s'''
* Will now drop their corresponding wood planks when broken.

'''[[Minecraft:End crystal]]s'''
* End crystals can no longer be placed in Adventure mode.

===World generation===
'''Terrain'''
* When riding a [[Minecraft:minecart]], [[Minecraft:boat]], [[Minecraft:pig]] or [[Minecraft:horse]], terrain will now normally generate.

===Command format===
'''{{cmd|gamerule}}'''
* Using the command to set a game rule will now report the change: "Game rule <gamerule> has been updated to <value>."

===Gameplay===
'''[[Minecraft:Frost walker]]'''
* No longer frosts blocks that do not have an air block above.

'''[[Minecraft: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."

'''[[Minecraft:Status effect]]s'''
[[File:GlowingSnapshotComparison.png|thumb|250px|A comparison of the glowing effect on an ender dragon before and after this snapshot.]]
* [[Minecraft:Glowing]] status effect now outlines players and mobs more exactly, arrows stuck in them or items held and transparencies will now be obeyed.

== Fixes ==

{{fixes|fixedin=15w51a|prefix=Minecraft

|;old
|3564|Debug message "<code>Unable to locate Sign at (x, y, z)</code>" left inside ''Minecraft'' client.
|13046|Certain supported characters glitch out, clearing outlines of text.
|51725|Gamerule <code>doMobLoot</code> does not affect the dropping of music discs.
|69072|{{cmd|worldborder warning distance/time}} throws an error when used without arguments.
|73886|Villagers don't recognize blocked doors correctly.
|75256|<code>spawn-protection</code> is also spawn randomization size.
|93614|Bats fly from creative players.

|;dev
|85709|The ender dragon is incorrectly outlined when it has the glowing effect.
|86099|The outline of the glowing guardian's tail is bigger than the tail itself.
|89246|When the "glowing" effect finishes on an entity it un-renders things for one frame.
|89915|Chunks don't load when the player is in a minecart/on a horse/pig.
|89954|All boat types drop oak wood planks.
|90585|Navigating on a boat wearing Frost Walker enchantment frosts the water layer below the boat.
|92915|Items, blocks & XP orbs appear transparent and/or gray when picked up
|93503|Inner elytra texture doesn't render while holding a skull.
|93532|Holding items will slightly brighten an elytra being worn.
|93622|Endermen remain hostile after switching gamemodes.
|93772|Mobs follow player in Creative and Spectator mode.
|93844|Transparent hat pixels on skull render opaque.
|93944|Default resource pack is ordered topmost until closing and re-entering the resource pack dialogue.
|94010|Wolves joining an attack stay aggressive on the player even after changing gamemode.

|;previous
|94295|Ender dragon respawns on its own in pre-1.9 worlds.

}}</onlyinclude>

== Videos ==
{{slicedlime|IC1Fjp-Sz7M}}

== Trivia ==
* Unlike most of the first-of-the-week snapshots, this was released on a Thursday instead of a Wednesday, similar to the snapshots before [[Minecraft:14w26a]].
* 15w51a was previously removed from the [[Minecraft:Java Edition launcher|launcher]] for some time but was added back in September 2018.
* As with [[Minecraft:15w51b]], 15w51a was released on the second latest calendar date out of all snapshots on December 17, only beaten by [[Minecraft:23w51a]] and [[Minecraft:23w51b]] on December 18.

== References ==
{{reflist}}

== Navigation ==
{{Navbox Java Edition versions|1.0}}

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Minecraft:Java Edition 15w51a - Revision history

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