{{Infobox version
|title=Minecraft 23w51a
|image=23w51a.jpg
|image2=Java Edition 23w51a.png
|edition=Java
|type=Snapshot
|date=December 18, 2023
|jsonhash=e7f5eda72c5ddee1828f629f00f5d97a3d1fd9f9
|clienthash=c54391b4de6db1b63f880d2fc4439df89798adf3
|clientmap=b01bcdb0bb6f9307e01975bf3b5ccfc9fbed60a2
|serverhash=e44e1d8c34f3020b0485ddd1436e91134b7de9a3
|servermap=0dfbd1f1f06a4b5e0886ff1329e90cc12c05a060
|parent=1.20.5
|prevparent=1.20.4
|prev=
|next=23w51b
|nextparent=1.20.6
}}<onlyinclude>

'''23w51a''' is the first [[snapshot]] for [[Java Edition 1.20.5]], released on December 18, 2023,<ref>{{snap|23w51b|id=a|December 18, 2023}}</ref> which adds [[armadillo]]s and [[wolf armor]] along with many bug fixes.

== Additions ==
=== Items ===
; [[File:Armadillo Scute JE1 BE1.png|32px]] [[Armadillo scute]]
* Dropped by [[armadillo]]s when [[brush]]ed.
* [[Dispenser]]s can be used to brush armadillo scutes off armadillos.
* Can be used to craft [[wolf armor]].

; [[Spawn egg]]
* [[File:Armadillo Spawn Egg JE1 BE1.png|32px]] Added [[armadillo]] spawn egg.

; [[File:Wolf Armor JE1 BE1.png|32px]] [[Wolf armor]]
* Crafted with 6 [[armadillo scute]]s in a harness shape.
* Protects [[wolves]] from damage.
** Wolf armor gives wolves the same protection level as [[diamond horse armor]].
* Using wolf armor on an adult tamed wolf equips the armor on the wolf, and using [[shears]] drops the armor.
** Only a wolf's owner can put on / shear off wolf armor. That also excludes dispensers.
* If a wolf dies while wearing armor, it drops the armor.

=== Mobs ===
; [[File:Armadillo JE1.png|32px]] [[Armadillo]]
* The winner of [[Minecraft Live 2023]]'s Mob Vote.
* A passive mob that spawns in [[savanna]] biomes with the same frequency as [[chicken]]s and [[pig]]s.
* Has {{hp|12}} health points.
* Can drop [[armadillo scute]]s either periodically or when brushed, but drops no loot when killed.
** Armadillos drop scutes at around the same rate as chickens lay eggs.
** Brushing takes some durability from the [[brush]].
* Can be bred with [[spider eye]]s.
* If an armadillo detects a threat, it rolls up.
** Threats include:
*** A player sprinting.
*** A player in a vehicle or mounted.
*** [[Undead]] mobs.
** Special cases where an armadillo don't roll up include when it is:
*** Fleeing.
*** In water or in the air.
*** On a leash.
** When an armadillo is rolled up it cannot walk nor eat, and isn't be tempted by food.
** While rolled up, armadillos continuously scan for threats. If no threats are detected for 3 seconds (60 ticks), they unroll.

=== General ===
; [[Attribute]]s
* Added the <code>generic.scale</code> attribute.
** Allows changing the size of any mob to anywhere between 0.0625 and 16 times their default size.
* Added the <code>generic.step_height</code> attribute.
** Determines the max height in blocks where a mob can walk above without jumping.
** Default is 0.6, and the valid range is from 0 to 10.
* Added the <code>generic.block_interaction_range</code> and <code>generic.entity_interaction_range</code> attributes.
** Determines the maximum range a player can interact with blocks and entities, respectively.
** They both range between 0 and 64, with the default value being 4.5 for blocks and 3 for entities.

== Changes ==
=== Items ===
; [[Turtle scute]]
* Renamed "Scute" to "Turtle Scute".

=== Mobs ===
; General
* <code>FactorCalculationData</code> has been removed from mob effect instance tags.

; [[Shulker]]s
* Are no longer able to destroy armor stands.

=== Non-mob entities ===
; [[Llama spit]]s
* They now use a new damage type <code>spit</code> instead of <code>mob_projectile</code>.
* Are no longer able to destroy armor stands.

=== Gameplay ===
; [[Advancement]]s
* [[Armadillo]]s are now required for the "Two by Two" advancement.
* The "The Parrots and the Bats" advancement can be granted by breeding armadillos now.

=== General ===
; [[Data pack]]
* The version is now <code>27</code>.

; [[Effect]]
* The background texture of the small effect UI has been changed.

== Experimental ==
These changes only take effect when the [[Update 1.21]] experimental data pack is enabled.

=== Changes ===
==== Blocks ====
; [[Trial spawner]]s
* Now have the same two default loot tables as they have in trial chambers.

==== Mobs ====
; [[Breeze]]
* Added sounds for projectile deflection, 'charging up attack', the breeze being in the air, and a 'whirl' idle sound.
* Tweaked the existing sounds.
* Separate eyes textures have merged into the head.

==== Non-mob entities ====
; [[Wind charge]]
* The texture has been changed. However, the in-game appearance is not affected.

== Fixes ==
{{fixes|fixedin=23w51a
|;From released versions before 1.20
|100994|Items in hotbar appear on top of tab menu.
|117955|Player teleports to the top when crushed by a piston head.
|130244|When opening chat in {{key|F1}} mode, previous messages aren't visible.
|153643|Debug overlay is rendered behind hotbar items.
|167375|Baby turtle subtitles are grammatically incorrect.
|169389|End portals sometimes teleport the player to Overworld coordinates.
|171177|The player can enter Nether portals in Creative mode by running against the frame of the portal.
|172898|Equipping armor in Creative via right click causes it to disappear from the hotbar for a frame.
|173672|Title text renders in front of player names in player list.
|184066|Respawn anchors don't produce an ambient sound.
|184622|Sound for exiting a portal/travelling to another dimension does not use its subtitle string despite it existing in {{cd|en_us.json}}.
|185379|Baby polar bear subtitle does not explicitly mention it comes from a baby polar bear.
|187267|Title text renders in front of sidebar.
|193460|Inconsistent layering of sidebar and debug screen ({{key|F3}}) text.
|193511|Title text renders in front of narrator text.
|193515|Boss bar text renders in front of narrator text.
|193517|Boss bar text renders in front of sidebar.
|193521|Boss bar text renders in front of {{key|F3}}.
|193524|Boss bar text strikethough/underline renders on {{key|tab}} list.
|193753|Respawn anchor ambient sound subtitle refers to it as a portal.
|194948|Block breaking subtitle inconsistent with painting, item frame and lead breaking subtitles.
|198492|Players can be pushed into danger in situations where they wouldn't normally be damaged.
|198787|Inefficient streams in {{cd|GoalSelector}}.
|198963|Chat text renders in front of player names in player list.
|216071|Splash text resets if you hit escape on the Multiplayer menu, but not the Singleplayer menu.
|218811|Big dripleaves tilt when touched from the side.
|219899|Bone meal used on rooted dirt causes the particles to appear above it, despite the growth being below it.
|234889|Potion effect icons displayed within the HUD can overlap boss bars.
|238242|There is an unnecessary black pixel in the upper right corner of small potion UI icons in the inventory.
|248961|{{cd|takenDamage}} for achievement criteria is calculated wrongly when the player has equipped a helmet.
|249335|Using bone meal on mangrove leaves spawns growth particles at the center of the block instead of below it.
|250432|{{key|Esc}} key always unpauses the game in Demo mode.
|251027|Wearing a helmet doesn't reduce the damage of falling anvils or stalactites by {{frac|1|4}}.
|252409|Memory statistics within the debug menu contain some unnecessary spaces.
|259587|Negative item durability causes the durability bar to render incorrectly.
|261577|The nether portal overlay is rendered completely opaque when using spyglasses while standing inside of nether portals.
|266990|Maps with the same 'map' tag value, but different 'display' tag data can cause markers to disappear.
|;From 1.20
|263256|Chat renders on top of {{key|TAB}}, blocking information.
|;From 1.20.1
|263641|Boss bar text no longer renders behind potion effect icons.
|264597|{{key|F3}} debug menu underlined text renders over subtitles.
|264637|Text shaders resource packs cause subtitles to flicker.
|;From 1.20.2
|265541|{{cd|player.dat_old}} won't be read even if {{cd|player.dat}} doesn't exist.
|265669|Hotbar text renders above subtitle background but under subtitle text.
|266135|Cached macro commands ignore permission level, allowing limited permission escalation.
|266136|Macro commands ignore {{cd|function-permisson-level}} server setting, including when lower than default.
|266334|Shulker bullets destroy armor stands.
|266389|Glow berry particles are barely visible when bonemealed.
|266589|Armor durability is changed when swapping on Creative.
|266628|High polling rate causing stuttering.
|266960|Bossbar text renders in front of player list background and player icons.
|;From 1.20.3
|265835|The freezing effect is rendered totally opaque when using a spyglass.
|266055|Opening or closing a copper door or trapdoor while holding an axe / honeycomb grants wax-related advancement.
|266144|Copper doors are not part of the {{cd|#doors}} item tag.
|266145|Copper trapdoors are not part of the {{cd|#trapdoors}} item tag.
|266308|Copper bulbs have unused "{{cd|turn_off}}" sound.
|266430|Breeze on top of a non-full block produces particles of the block below it.
|266432|Exposed, weathered and oxidised copper bulbs are unwaxed in trial chambers.
|266469|When attacked, breezes sometimes stop pathfinding, jumping, or firing wind charges.
|266533|Breeze's AI has serious flaws in open terrain.
|266680|The glowing outline isn't applied to the eyes or eyebrows of breezes.
|266685|The entity shadows of breezes are too large in relation to the size of their models.
|266688|Breeze model's glowing eyes are not resource pack-friendly.
|266738|Subtitles string "{{cd|subtitles.block.trial_spawner.spawn_mob}}" is misleading and inconsistent.
|266879|Clouds, entity hitboxes, block outlines, specially rendered blocks, and enchantment glints, render through the insides of breezes' eyes and eyebrows.
|266909|Breezes don't have smooth transitions to their idle states when they stop moving.
|266999|Crafter's tooltip buttons can still be visible to players on Spectator mode.
|267133|Breezes can't attack or move when there is no land around them and they are on the same height block as the player.
|267193|A function with {{cmd|return fail}} run in chat doesn't indicate failure.
|;From 1.20.4
|267194|{{cmd|return run function}} in combination with a fork and a function that doesn't return has inconsistent behavior.
}}</onlyinclude>

== Trivia ==
* The scale attribute comes from the April fools snapshot [[Java Edition 23w13a or b|23w13a_or_b]] mainly taken from the attribute "minecraft:general.scale" or the "transform scale" command.
* 23w51a, along with [[Java Edition 23w51b|23w51b]], was released on the latest calendar date of all snapshots, on December 18. It beats [[Java Edition 15w51a|15w51a]] and [[Java Edition 15w51b|15w51b]] which were released on December 17.

== Video ==

{{slicedlime|uVzc6bOfGbQ|LxoOoLRB9-Y}}

== References ==
{{Reflist}}

== Navigation ==
{{Navbox Java Edition versions|1.2x}}

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