Java Edition 23w40a

{
 "title": "Minecraft 23w40a",
 "images": [
 "23w40a.jpg",
 "Java Edition 23w40a.png"
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 "rows": [
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 "field": "''(link to Java Edition article, displayed as Java Edition)''",
 "label": "(link to Edition article, displayed as Edition)"
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 {
 "field": "October 4, 2023",
 "label": "Release date"
 },
 {
 "field": "(link to Snapshot article, displayed as Snapshot)",
 "label": "(link to Version types article, displayed as Type)"
 },
 {
 "field": "(link to Java Edition 1.20.3 article, displayed as 1.20.3)",
 "label": "Snapshot for"
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 {
 "field": "[https://piston-data.mojang.com/v1/objects/8b5067a18632c3377da54aa9ff8e52e1a9055042/client.jar Client] ([https://piston-meta.mojang.com/v1/packages/306cf20e7d0abbfba6b705f689091d0b0e5878ae/23w40a.json .json])<br />[https://piston-data.mojang.com/v1/objects/0f51a81705f4694b92f5273ffa2c52c45f27b7f8/server.jar Server]",
 "label": "(link to Tutorial:Installing a version#Manual version installation article, displayed as Downloads)"
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 "label": "(link to Obfuscation map article, displayed as Obfuscation maps)"
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 {
 "field": " <span style=\"font-size:smaller\"><abbr title=\"decimal\">dec</abbr>: </span>1073741978<br /> <span style=\"font-size:smaller\"><abbr title=\"hexadecimal\">hex</abbr>: </span>4000009A",
 "label": "(link to Protocol version article, displayed as Protocol version)"
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 {
 "field": "3679",
 "label": "(link to Data version article, displayed as Data version)"
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 {
 "field": "18",
 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Resource pack format)</span>"
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 {
 "field": "19",
 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Data pack format)</span>"
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 "field": "<span class=\"plainlinks\">[https://en.wikipedia.org/wiki/Java_version_history#Java_SE_17_.28LTS.29 Java SE 17]</span>",
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 "invimages": [],
 "footer": "<table style=\"margin: auto; word-break: break-word;\">\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\" rowspan=\"2\">[[Java Edition 1.20.2|<span style=\"margin-right:-0.35em\">◄</span>◄  1.20.2]]</td>\n<td style=\"padding: 0.4em\">'''[[Java Edition 1.20.3|1.20.3]]'''</td>\n<td style=\"padding: 0.4em\" >[[Java Edition 1.20.4| 1.20.4 <span style=\"margin-right:-0.35em\">►</span>►]]</td>\n</tr>\n<tr style=\"background: inherit;\">\n\n<td style=\"padding: 0.4em\">''' 23w40a'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition 23w41a| 23w41a ►]]\n</td>\n</tr>\n</table>"
}

23w40a is the first snapshot for Java Edition 1.20.3, released on October 4, 2023,^[1] which improves shields, changes chat component serialization, and fixes bugs.

Tag

• Added following damage type tag:
  • #can_break_armor_stand: contains player_attack and player_explosion.
    • Used for damage types that can incrementally knock down armor stands.
• Added following entity tags:
  • #can_breathe_under_water: contains #undead, axolotl, frog, guardian, elder_guardian, turtle, glow_squid, cod, pufferfish, salmon, squid, tropical_fish, tadpole, and armor_stand.
    • Used to disable drowning.
  • #undead: contains #skeletons, #zombies, wither, and phantom.
  • #zombies: contains zombie_horse, zombie, zombie_villager, zombified_piglin, zoglin, drowned, and husk.

Decorated pot

• Now, if block state cracked is set to true, decorated pots always shatter when broken.

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.

Data pack

• The pack format version is now 19.

Raw JSON text format

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

Tag

• Added skeleton_horse into #skeletons entity tag.

22 issues fixed

From released versions before 1.20

• MC-47607 – Barrier particles aren't shown if particles are set to minimal.
• MC-50647 – Slime mob spawners spawn slimes only in slime chunks.
• MC-78314 – (Marker) Armor stands create bubbles in water.
• MC-109101 – Shields do not block damage while the player faces straight up.
• MC-114761 – Area effect cloud applies effect to dying mob.
• MC-172398 – Fire texture renders according to the player's rotation in the player inventory.
• MC-221558 – Light particles aren't shown if particles are set to minimal.
• MC-227255 – Beehives and bee nests do not rotate/mirror correctly in structure blocks.
• MC-236946 – Shield attack vector is normalized incorrectly.
• MC-247421 – Console spam: "Error starting SoundSystem. Turning off sounds & music".
• MC-253819 – Bells don't rotate correctly when loaded by structure/jigsaw blocks.
• MC-254850 – An operator can kick a host of a LAN world.
• MC-255173 – Nether portal teleportation is inaccurate at large coordinate values.
• MC-260341 – Death screen can remain after respawning using the Unsafe Link Warning.
• MC-263123 – Mending incorrectly calculates overflow after full repair.

From 1.20.1

• MC-261303 – Decorated pots have an unused "cracked" block state.
• MC-264748 – GLX._initGlfw Treats Pointer as a String.
• MC-265353 – Clocks and Compasses in Item Display Entities don't show correct time/direction.

From 1.20.2

• MC-265462 – Sending resource pack during play phase shows loading terrain screen for a long time.
• MC-265519 – Game minimizes when certain areas of the screen are clicked on Mac in fullscreen mode.
• MC-265589 – Brigadier exception can be repeatedly logged if command has invalid syntax.
• MC-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.