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{{Infobox version
| title = Minecraft 23w40a
| image = 23w40a.jpg
| image2 = Java Edition 23w40a.png
| edition = Java
| type = Snapshot
| date = October 4, 2023
| jsonhash = 306cf20e7d0abbfba6b705f689091d0b0e5878ae
| clienthash = 8b5067a18632c3377da54aa9ff8e52e1a9055042
| clientmap = 70835872514b930e6e7b60886c86ef589e02db12
| serverhash = 0f51a81705f4694b92f5273ffa2c52c45f27b7f8
| servermap = ffe335fafa460378bf4242b9d07c4edc0f95f4bc
| parent = 1.20.3
| prevparent = 1.20.2
| prev =
| next = 23w41a
| nextparent = 1.20.4
}}<onlyinclude>

'''23w40a''' is the first [[Minecraft:snapshot]] for [[Minecraft:Java Edition 1.20.3]], released on October 4, 2023,<ref>{{snap|23w40a|October 4, 2023}}</ref> which improves [[Minecraft:shield]]s, changes chat component serialization, and fixes bugs.

== Additions ==
=== General ===
'''[[Minecraft:Tag]]'''
* Added following damage type tag:
** <code>#can_break_armor_stand</code>: contains <code>player_attack</code> and <code>player_explosion</code>.
*** Used for damage types that can incrementally knock down armor stands.
* Added following entity tags:
** <code>#can_breathe_under_water</code>: contains {{cd|d=and|#undead|axolotl|frog|guardian|elder_guardian|turtle|glow_squid|cod|pufferfish|salmon|squid|tropical_fish|tadpole|armor_stand}}.
*** Used to disable drowning.
** <code>#undead</code>: contains {{cd|d=and|#skeletons|#zombies|wither|phantom}}.
** <code>#zombies</code>: contains {{cd|d=and|zombie_horse|zombie|zombie_villager|zombified_piglin|zoglin|drowned|husk}}.

== Changes ==
=== Blocks ===
'''[[Minecraft:Decorated pot]]'''
* Now, if block state <code>cracked</code> is set to <code>true</code>, decorated pots always shatter when broken.

=== Items ===
'''[[Minecraft:Shield]]'''
* When a player is blocking with a shield, the arm with the shield now follows the direction the player is looking at, when viewed from third person perspective.

=== General ===
'''[[Minecraft:Data pack]]'''
* The [[Minecraft:pack format]] version is now <code>19</code>.

'''[[Minecraft:Raw JSON text format]]'''
* Plain-text chat components (text, no sibilings, no stylings) are now always serialized as string instead of <code>{"text": "your text"}</code>.
* Chat components now serialize to NBT when sent over network.
* Chat components now have an optional type value (allowed values: {{cd|d=and|text|translatable|score|selector|nbt|keybind}}) to speed up parsing and improve error checking.
* <code>id</code> field in <code>show_entity</code> <code>hoverEvent</code> style now also accepts UUID as an array of 4 integers.
* Numeric and boolean arguments for <code>translate</code> component are no longer converted to string.
* The following JSON component representations are no longer accepted:
** <code>null</code>
** <code>[]</code>
* Errors in following style fields are no longer silently ignored:
** <code>color</code>
** <code>clickEvent</code>
** <code>hoverEvent</code>
** <code>hoverEvent[action=show_entity].contents.name</code>
** <code>hoverEvent[action=show_item].contents.tag</code>

'''[[Minecraft:Tag]]'''
* Added <code>skeleton_horse</code> into <code>#skeletons</code> entity tag.

== Fixes ==
{{fixes|fixedin=23w40a
|;From released versions before 1.20
|47607|Barrier particles aren't shown if particles are set to minimal.
|50647|Slime mob spawners spawn slimes only in slime chunks.
|78314|(Marker) Armor stands create bubbles in water.
|109101|Shields do not block damage while the player faces straight up.
|114761|Area effect cloud applies effect to dying mob.
|172398|Fire texture renders according to the player's rotation in the player inventory.
|221558|Light particles aren't shown if particles are set to minimal.
|227255|Beehives and bee nests do not rotate/mirror correctly in structure blocks.
|236946|Shield attack vector is normalized incorrectly.
|247421|Console spam: "{{cd|Error starting SoundSystem. Turning off sounds & music}}".
|253819|Bells don't rotate correctly when loaded by structure/jigsaw blocks.
|254850|An operator can kick a host of a LAN world.
|255173|Nether portal teleportation is inaccurate at large coordinate values.
|260341|Death screen can remain after respawning using the Unsafe Link Warning.
|263123|Mending incorrectly calculates overflow after full repair.
|;From 1.20.1
|261303|Decorated pots have an unused "cracked" block state.
|264748|<code>GLX._initGlfw</code> Treats Pointer as a String.
|265353|Clocks and Compasses in Item Display Entities don't show correct time/direction.
|;From 1.20.2
|265462|Sending resource pack during play phase shows loading terrain screen for a long time.
|265519|Game minimizes when certain areas of the screen are clicked on Mac in fullscreen mode.
|265589|Brigadier exception can be repeatedly logged if command has invalid syntax.
|266196|Signs and hanging signs become non-editable by right-click after modifying one line message to an empty text string with a specific color.
}}</onlyinclude>

== Videos ==
{{slicedlime|ipQgxRlu9y0}}

== References ==
{{Reflist}}

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

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Minecraft:Java Edition 23w40a - Revision history

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