Java Edition 24w20a

{
 "title": "Minecraft 24w20a",
 "images": [
 "24w20a.jpg",
 "Java Edition 24w20a.png"
 ],
 "rows": [
 {
 "field": "''(link to Java Edition article, displayed as Java Edition)''",
 "label": "(link to Edition article, displayed as Edition)"
 },
 {
 "field": "May 15, 2024",
 "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 1.21 article, displayed as 1.21)",
 "label": "Snapshot for"
 },
 {
 "field": "[https://piston-data.mojang.com/v1/objects/114be228b9168caeb28769a716c6f78d5aba7588/client.jar Client] ([https://piston-meta.mojang.com/v1/packages/837e9b5707c5c76ed705b7835f40323b4b04bfc0/24w20a.json .json])<br />[https://piston-data.mojang.com/v1/objects/e3b1bcc2d7a09b6f1acfef7090ee64409feb3b94/server.jar Server]",
 "label": "(link to Tutorial:Installing a version#Manual version installation article, displayed as Downloads)"
 },
 {
 "field": "[https://piston-data.mojang.com/v1/objects/d154a11e41461705c338a0544fd541c607559198/client.txt Client]<br />[https://piston-data.mojang.com/v1/objects/35dc942cb3328dd856ee3961642f5500e069e98f/server.txt Server]",
 "label": "(link to Obfuscation map article, displayed as Obfuscation maps)"
 },
 {
 "field": " <span style=\"font-size:smaller\"><abbr title=\"decimal\">dec</abbr>: </span>1073742020<br /> <span style=\"font-size:smaller\"><abbr title=\"hexadecimal\">hex</abbr>: </span>400000C4",
 "label": "(link to Protocol version article, displayed as Protocol version)"
 },
 {
 "field": "3944",
 "label": "(link to Data version article, displayed as Data version)"
 },
 {
 "field": "33",
 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Resource pack format)</span>"
 },
 {
 "field": "44",
 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Data pack format)</span>"
 },
 {
 "field": "<span class=\"plainlinks\">[https://en.wikipedia.org/wiki/Java_version_history#Java_SE_21_.28LTS.29 Java SE 21]</span>",
 "label": "<span style=\"white-space: normal;\">Minimum Java version</span>"
 }
 ],
 "invimages": [],
 "footer": "<table style=\"margin: auto; word-break: break-word;\">\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\" >[[Java Edition 1.20.6|<span style=\"margin-right:-0.35em\">◄</span>◄  1.20.6]]</td>\n<td style=\"padding: 0.4em\">'''[[Java Edition 1.21|1.21]]'''</td>\n<td style=\"padding: 0.4em\" >[[Java Edition 1.21.1| 1.21.1 <span style=\"margin-right:-0.35em\">►</span>►]]</td>\n</tr>\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\">\n[[Java Edition 24w19b|◄  24w19b]]\n</td>\n<td style=\"padding: 0.4em\">''' 24w20a'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition 24w21a| 24w21a ►]]\n</td>\n</tr>\n</table>"
}

24w20a is the fourth snapshot for Java Edition 1.21, released on May 15, 2024,^[1] which fixes bugs.

Witch

• Now always drops 4–8 redstone dust on death.
  • This is to improve the viability of farms that utilize witch huts to obtain redstone dust.^[1]

Effects

• Improved player attribute and effect handling.
  • Custom set base attributes are now kept when respawning.
  • Active effects and modifiers are kept when changing dimension or winning the game.

Enchantments

• Wind Burst
  • Invalidates the fall damage protection of mace smash attacks once again, reverting the fix of MC-270687.^[2]

Pistons

• Changed sounds to lower their volume and attenuation.
  • This was done to address the old sounds being too harsh and loud when used in redstone contraptions.^[1]

Credits

• Have been updated.

Data pack

• The pack format version is now 44.

Custom structure

• dimension_padding jigsaw structure tag was changed.
  • Now it is an object with fields:
    • bottom: the vertical padding at the bottom of the dimension, non-negative integer.
    • top: the vertical padding at the top of the dimension, non-negative integer.
  • Can be written as a single non-negative integer instead to be applied to both top and bottom fields.
    • e.g. both dimension_padding: 10 or dimension_padding: { bottom: 10, top: 5 } are valid.
• Data-driven enchantment field weight now has an upper bound of 1024.
• Data-driven enchantment field max_level now has an upper bound of 255.
• New entity sub predicate movement_affected_by - optional location predicate.
  • When present, adds requirements on a block at most 0.5 blocks below the entity which can affect its movement.

49 issues fixed

From released versions before 1.21

• MC-6431 – Status effects are lost when returning to the Overworld from the exit End portal.
• MC-83590 – Armor attributes list can be too long.
• MC-101170 – Portal sound doesn't get played when returning from the End.
• MC-124177 – Teleporting to another dimension loses some client states.
• MC-137719 – The player's horizontal motion doesn't affect fired projectiles in certain situations.
• MC-179940 – Player's attributes reset back to default values upon respawning.
• MC-181604 – Exiting the End portal resets player attributes to their default values.
• MC-252361 – Obsidian platform in the End is off by a block from entering from the Nether compared to the Overworld.
• MC-255218 – Fly mode is disabled after teleporting from the End to the Overworld through the End portal.
• MC-267230 – Hangul fonts are rendered with missing pixels.
• MC-268113 – The minecraft:generic.scale attribute is desynchronized when the player leaves the End dimension via an End portal.
• MC-268370 – Japanese CJK variants use the same diacritic.
• MC-268598 – The "weight" of skeletons in swamp biomes is too high causing less bogged spawns.
• MC-269036 – Bogged do not drop mushrooms when sheared with doMobLoot false.
• MC-269147 – Shearing a bogged spawns mushrooms at the bogged's feet.
• MC-269574 – Client attribute values may desync from the server after leaving the End.
• MC-269951 – When the gamerule "doImmediateRespawn" is set to true, the Wind Charged, Oozing or Weaving effects don't function for players.
• MC-270052 – Blur levels below 10 % do not appear to actually work.
• MC-270301 – The Fire Protection enchantment applied to horse armor no longer decreases the duration of time the horse remains ablaze.
• MC-270539 – The Blast Protection enchantment, when applied to horse armor, no longer diminishes the knockback effect from explosions on horse.
• MC-270637 – maxEntityCramming set to 0 prevents slime spawning from Oozing effect.
• MC-270789 – Only mace smash attacks increment "Times Used" stat.
• MC-271034 – List entries in the Social interactions menu are rendered over the background.
• MC-271168 – Demo timer does not respect "Text Background" setting.
• MC-271244 – Auto-save text does not respect "Text Background" setting in accessibility settings.
• MC-271360 – Horse armor and wolf armor are deleted when used on an armor stand.
• MC-271414 – /damage command at position applies knockback in random direction.
• MC-271980 – Arrows/bee stingers stuck in players disappear when leaving the End.

From the 1.21 development versions

• MC-271462 – Buttons make the deactivation sound when pressed.
• MC-271468 – Game crashes with custom enchantment's "rotated_block_provider".
• MC-271532 – Mace only loses durability during smash attacks.
• MC-271533 – Throwing Channeling trident at mobs during thunderstorm in Survival no longer summons lightning.
• MC-271547 – The player can't immediately sprint jump into a 2 block ceiling when standing next to it since 24w18a.
• MC-271566 – Game crash on insufficient "ammo_use" amount.
• MC-271574 – Inlining a painting variant causes players to disconnect when receiving entity data.
• MC-271583 – Soul speed no longer works through partial blocks.
• MC-271629 – Channeling doesn't work/"post_attack" effect requires enchanted item to be in the mainhand.
• MC-271636 – Attempting to modify NBT of killer rabbit throws unexpected error.
• MC-271678 – damage_item enchantment entity effect doesn't break items.
• MC-271715 – Crash when the sum of enchantments' weights overflow.
• MC-271716 – Fraction value provider allows division by zero.
• MC-271803 – Custom enchantment with very large max level causes game to hang after opening Creative inventory.
• MC-271863 – Crafter recipe gets stuck on an item with a similar recipe.
• MC-271881 – Soul speed doesn't make soul particles.
• MC-271896 – Using ++ on a villager crashes the game.
• MC-271937 – Striking a villager with Channeling trident during thunderstorms doesn't grant the advancement "Very Very Frightening".

From the previous development version

• MC-271853 – Random "Failed to store chunk" error.
• MC-271854 – Trying to generate new chunks crashes the server.
• MC-271948 – Entering the Nether breaks the game.