Java Edition 1.21.4/Development versions

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This is a list of Java Edition 1.21.4 development versions.

24w44a

24w44a is the first snapshot for Java Edition 1.21.4, released on October 30, 2024[1], that adds the eyeblossom and resin family blocks, makes Winter Drop features available in normal gameplay (replacing the "Winter Drop" experiment) and fixes bugs.

Additions

Blocks

Resin block family
Eyeblossoms
  • Eyeblossoms are new flowers that generate in the pale garden biome.
    • They exist in two variants: closed and open.
    • Eyeblossoms transition between the two variants based on the time of day.
      • During the night, eyeblossoms will become open.
      • During the day, they will become closed.
    • In dimensions that do not have a day/night cycle, they will remain as-is.
    • Eyeblossoms planted on the ground will communicate with each other, helping each other to open or close.
    • Open eyeblossoms have glowing eyes during the night.
    • Can be obtained by bonemealing the grass in the pale garden biome.
    • Bees get poisoned when they interact with eyeblossoms.
    • Suspicious stew made from eyeblossom will have blindness or nausea effect depending on the variant.
    • Gray or orange Dye can be crafted from closed and open eyeblossoms respectively.
    • Wandering Traders can sell open eyeblossoms.

Changes

Blocks

Bells, Lanterns, Soul Lanterns, Copper Doors, Iron Doors, Heavy Weighted Pressure Plates, Light Weighted Pressure Plates, Polished Blackstone Pressure Plates, Stone Pressure Plates, Brewing Stands
  • Now drop when broken with any tool.
Ender Chests
  • Now has its normal drops when mined with anything.
    • This is itself when mined with any item enchanted with Silk Touch, and 8 obsidian otherwise.
Creaking Heart
  • Are no longer experimental.
  • Attacking a Creaking will cause its Creaking Heart to exude 2 to 3 Resin Clumps.
  • Creaking Heart can be obtained by using a Silk Touch enchanted tool.
  • Creaking Heart can be crafted with a Resin Block and Pale Oak Logs.
  • Naturally placed Creaking Hearts drop 20-24 experience when broken by a player, with or without silk touch.
  • Breaking a Creaking Heart block will drop 1-3 Resin Clumps, and it is affected by Fortune enchantment.
  • A minor change to the texture of the top of the block.
Nether Bricks
  • Changed the texture of normal, chiseled, cracked and red nether bricks to match the pattern of other brick blocks.
Pale Moss Block
Pale Hanging Moss
  • Are no longer experimental.
  • Breaks instantly when mined.
  • Requires shears or silk touch tools to be obtained.
  • Can now be sold by the wandering trader.
Pale Oak Sapling
Pale Oak Leaves
  • Now emit a falling particle effect, similar to cherry leaves.
Pale Hanging Signs
  • A minor texture change occurred.

Mobs

Bee
  • Instead of breeding, they get withered when fed wither roses, and poisoned by eyeblossoms.
    • Neither of these will anger bees.
Creaking
  • The melee attacks deal 3 points of damage (1.5 hearts)
  • The following changes apply for naturally spawning Creaking:
    • Reacts only to damage caused by mobs and projectiles, by swaying in place.
    • Ignores Cactus, Sweet Berry Bushes and Powder Snow damage and can now walk through/over them.
    • Has a twitching animation.
    • Is fire-resistant.
  • The creaking heart may decide to remove or replace its associated creaking when:
    • It turns day.
    • The creaking is too far away from the heart.
    • A player intersects with the creaking for a few seconds.

World generation

Pale oak
  • Player grown pale oak trees grow without any decorations.
  • Naturally generated pale oak trees have pale hanging moss hanging from the foliage, pale moss patches on the ground, and creaking heart blocks can generate in them.

Sounds

Pale Garden
  • The pale garden has no music, and currently playing music will gradually fade out if the player enters one.

General

Title screen

Technical

Additions

General
Entity format
  • Added optional field explosion_speed_factor that controls the amount of added damage depending on the speed of the Minecart.
    • Default value: 1.0.
Raw JSON text format
  • Added optional shadow_color style field to Text Components, which overrides the shadow properties of text.
    • Format:
      • A packed integer ARGB value (e.g. -1).
      • An array of RGBA values (e.g. [1, 1, 1, 1]).
    • If specified as 0, the shadow will never be displayed for this text.
    • If specified as a non-zero value, the shadow will always be displayed with this color.

Changes

Command format
/attribute
  • A subcommand to reset the base value of an attribute to its default value for the target entity was added. If the attribute does not exist on the entity, the command will fail.
  • Syntax:
  • Parameters:
    • target: The entity to update the attribute for
    • attribute: The attribute ID to update.
  • Suggestions will now be shown for /attribute modifier IDs existing on the target in the /attribute command.
General
Data pack
  • The pack format version is now 58.
  • Removed the winter_drop feature flag and built-in datapack.
    • The winter drop feature flag is now in the game by default.
Block entity
  • Item blocks with minecraft:block_entity_data component will now set block entity data only if id tag matches type of placed block entity.
    • Additionally, a warning will be added to item tooltip if placing such item might directly or indirectly lead to command execution with high permission level.
Biome effects
  • Have a new format for music using a weighted list.
    • The list can be empty indicating no music should play in this biome.
  • Have a new optional field: music_volume.
    • The game will smoothly transition between the current music volume and the new volume when entering the biome :
"music": [
    {
      "data": {
        "max_delay": 24000,
        "min_delay": 12000,
        "replace_current_music": false,
        "sound": "minecraft:music.overworld.forest"
      },
      "weight": 1
    }
  ],
  "music_volume": 1.0,
Configured feature
  • The simple_block feature type has a new optional field: schedule_tick.
    • If set to true, the block will be scheduled to tick
Entity format
  • The TNTFuse field of TNT Minecarts has been renamed to fuse.
GUI Sprites
  • The toast/system sprite layout has been updated to use standard nine-slicing functionality
  • The toast/tutorial sprite will now be scaled for taller toasts, and as such has nine-slice scaling in the default Resource Pack
  • The advancements/box_obtained and advancements/box_unobtained GUI sprites are now configured to scale with nine-slicing
  • Empty slot sprites, such as those for the armor slots in the inventory, have been renamed and moved from items into the gui/sprites/container/slot directory.
    • empty_armor_slot_helmet -> helmet.
    • empty_armor_slot_chestplate -> chestplate.
    • empty_armor_slot_leggings -> leggings.
    • empty_armor_slot_boots -> boots.
    • empty_slot_sword -> sword.
    • empty_slot_pickaxe -> pickaxe.
    • empty_slot_axe -> axe.
    • empty_slot_shovel -> shovel.
    • empty_slot_hoe -> hoe.
    • empty_slot_smithing_template_armor_trim -> smithing_template_armor_trim.
    • empty_slot_smithing_template_netherite -> smithing_template_netherite_upgrade.
    • empty_slot_amethyst_shard -> amethyst_shard.
    • empty_slot_diamond -> diamond.
    • empty_slot_emerald -> emerald.
    • empty_slot_ingot -> ingot.
    • empty_slot_lapis_lazuli -> lapis_lazuli.
    • empty_slot_quartz -> quartz.
    • empty_slot_redstone_dust -> redstone_dust.
  • The empty slot sprites in the Loom have been split from their background and moved:
    • container/loom/banner_slot -> container/slot/banner.
    • container/loom/pattern_slot -> container/slot/banner_pattern.
    • container/loom/dye_slot -> container/slot/dye.
  • The empty slot sprites in the Brewing Stand have been split from the container background:
    • container/slot/brewing_fuel.
    • container/slot/potion.
  • The empty slot sprites in the Horse/Llama inventories have been split from their background, cropped, and moved:
    • container/horse/armor_slot -> container/slot/horse_armor.
    • container/horse/llama_armor_slot -> container/slot/llama_armor.
    • container/horse/saddle_slot -> container/slot/saddle.
Particles
  • trail particle has a new required field: duration.
    • Indicates, in ticks, how long the particle will take to fly from the start to the target.
Resource pack
  • The version is now 43.
  • Added the following new block models and textures:
    • chiseled_resin_bricks
    • closed_eyeblossom
    • open_eyeblossom
      • Additionally uses open_eyeblossom_emissive texture layer
    • resin_block
    • resin_bricks
    • resin_clump
  • Added the following non-top-level block models:
    • cross_emissive
    • flower_pot_cross_emissive
  • Added the following new item models and textures:
    • resin_brick
    • resin_clump
  • Added new Armor Trim color palette: trims/color_palettes/resin.
  • The UV mapping of the Magma Cube texture has been updated.

Experimental

All features previously behind the "Winter Drop" experimental toggle have been de-experimentified and are now available during normal gameplay.

Fixes

109 issues fixed
From released versions before Java Edition 1.21.4
  • MC-12829 – Flying through climbable blocks in creative mode slows you down.
  • MC-16132 – Cave carvers don't cut through snow blocks.
  • MC-49071 – The title of written books is not displayed in item frames unless renamed with anvils.
  • MC-50614 – Villager trading window is not closed when villager leaves interaction range.
  • MC-55347 – Title with long duration shows in other world.
  • MC-59308 – Dark/pale oak leaves sometimes do not generate centered on the tree.
  • MC-65931 – The pick block function doesn't work with entities while in survival or adventure mode.
  • MC-71990 – The 'Hat' layer of a player skin is not shown in the tab list under certain conditions.
  • MC-72846 – Altering the time of day using commands is delayed.
  • MC-74408 – The brewing stand GUI does not have container sprites for the fuel and potion output slots.
  • MC-86153Ctrl + Pick Block gives new item even if picked item already exists in inventory.
  • MC-111516 – Player flickers/turns invisible when flying at high speeds.
  • MC-134002 – Blocks at y=-64 don't render on a map.
  • MC-152728 – The player continues sprinting when performing actions that slow them down.
  • MC-158205 – Ender Dragon doesn't take damage from melee attacks unless hit a certain way.
  • MC-165778 – Maps ignore blocks at the lowest block position (y = -64 in the Overworld) with no block above.
  • MC-166614 – Advancements menu doesn't render titles fully when they're longer than roughly 30 characters.
  • MC-177078 – Sound event minecraft:entity.minecart.inside does not have an associated subtitle.
  • MC-177082block.[block type].fall sounds have no subtitles.
  • MC-177084 – Ambient sounds when flying with elytra have no subtitles.
  • MC-177091 – Skeleton horse underwater jump sound has no subtitle.
  • MC-181438 – Elytra visual shuddering when using slow falling.
  • MC-191096 – Fences and walls can no longer be placed in invalid block states by using /setblock or /fill.
  • MC-191698 – Cannot set "shape" block state of stairs with /setblock.
  • MC-192498/fill and /setblock cannot set different directional block states of several blocks, such as glass panes and iron bars.
  • MC-192791 – Doors' block states cannot be set if another door half exists.
  • MC-192943 – Cannot set the in_wall block state of fence gates with /setblock or /fill.
  • MC-192956 – Cannot setblock chest type other than single without other adjacent chest.
  • MC-192959 – Cannot setblock a directional state on redstone wire nor tripwire.
  • MC-193315/setblock and /fill resets the instrument block state of note blocks.
  • MC-200508 – No subtitle for fish swim.
  • MC-203146 – No subtitle for item.crossbow.loading_middle.
  • MC-204124 – Underwater minecart riding sound does not have a subtitle.
  • MC-215992 – Inconsistency with blackstone and stone pressure plate drops compared to buttons.
  • MC-218873 – Lanterns and soul lanterns require a pickaxe to drop despite being able to break the block on which they are mounted and them drop.
  • MC-225367 – Magma Cube's layers UV mapping overlaps.
  • MC-255254/setblock can't place snowy grass blocks.
  • MC-256822 – Advancement description text cuts words in weird places if title is too short.
  • MC-264541 – Nine_sliced sprite glitch.
  • MC-265033 – Slots with item outline textures behave inconsistently when items are placed inside of these slots.
  • MC-265637/execute on origin doesn't work on Area Effect Cloud's owner after rejoining.
  • MC-266019 – Large bold text can have gaps in the middle of characters.
  • MC-267095 – Nether Brick block texture misalignment.
  • MC-267192 – "download.pack.failed" string exceeds the prompt box when the Force Unicode Font is turned off.
  • MC-267730 – Text wall when trying to join a server.
  • MC-267878 – Tutorial hint for movement may not fit all the required text if controls are changed.
  • MC-268364 – Wind Charges don't ignite TNT minecarts.
  • MC-268522 – The last language option is not deselected if you reach the bottom of the list and exit the menu.
  • MC-268822 – There are no shadows on text displayed within the singleplayer, multiplayer, and realms list menus.
  • MC-269935 – Advancement box textures use nine-slice scaling, but seemingly cannot be configured.
  • MC-271218 – Empty Offers:{} NBT doesn't disable trades anymore.
  • MC-272105 – Decorated Pot is missing the "contents" implicit data component type.
From 1.21
  • MC-272062 – Dimension padding doesn't affect the start piece.
From 1.21.1
  • MC-276123 – Display entity shadow_radius updates for all display entities.
  • MC-276794 – There are no shadows on text displayed within the social interactions list menu.
  • MC-276799 – There are no shadows on text displayed within the superflat customization or preset lists.
  • MC-277368 – The "message(s) selected" text within the "Select Chat Messages to Report" menu is positioned too close to the header separator.
  • MC-277373 – There are no shadows on text used to display the names of categories within the key binds menu.
  • MC-277374 – There are no shadows on text used to display the names of lists within the resource pack and data pack menus.
  • MC-277408 – There are no shadows on text used to display the description of report categories within the "Select Report Category" menu.
  • MC-277440 – There are no shadows on text used to display the speed at which a world is being uploaded within the realms menu.
  • MC-277441 – There are no shadows on text used to display the start date and time left of your realm subscription within the realms menu.
  • MC-277443 – There are no shadows on text displayed when connecting to realms.
  • MC-277444 – There are no shadows on text used to display the names of text boxes within the realms settings menu.
  • MC-277477 – There are no shadows on text used to display the description of advancements within the advancements menu.
  • MC-277478 – The "Layer Material" and "Height" text within the "Superflat Customization" menu is positioned too close to the header separator.
  • MC-277479 – There are no shadows on text used to display the names of game rules within the game rules menu.
  • MC-277480 – There are no shadows on placeholder text displayed within the "Please describe what happened" box within the reporting menu.
  • MC-277499 – Most empty slot icons ignore "scaling" parameter in mcmeta files.
  • MC-277510 – When grass or mycelium grows under powder snow the grass is not snowy.
  • MC-277617 – The base damage of the Power enchantment was reduced in 1.21.
From 1.21.2
  • MC-275917 – Consumable blocking animation is broken in first person.
  • MC-276389 – The "Can hold a mixed stack of items" text within bundle tooltips doesn't have a shadow.
  • MC-276969 – TNT Minecarts with explosion_power set to 0 can still break blocks.
  • MC-277066 – Creakings do not show particles leading to the creaking heart if Particles are set to Minimal.
  • MC-277072 – You can use bone meal on pale moss carpets in situations where nothing grows.
  • MC-277076 – Pale hanging moss doesn't have an assigned tool.
  • MC-277094 – Pale oak hanging sign uses a totally different palette to the rest of the wood set.
  • MC-277101 – Destroying a creaking heart with player-activated TNT does not grant the Monster Hunter advancement.
  • MC-277113 – Pale oak sign item and block texture is inconsistent with the other signs.
  • MC-277115 – Creaking mob can spawn inside block.
  • MC-277123 – You can get soft locked if a creaking falls in a hole with you.
  • MC-277129 – The Creaking "slides" on the ground when not aggro towards the player.
  • MC-277132 – Pale oak sign item textures are inconsistent.
  • MC-277134 – Pale chest boat item is incorrect.
  • MC-277145 – The 2 brightest pixel colors on pale oak boat items are wrong.
  • MC-277154 – Sculk sensors are not activated upon creakings dying through their creaking hearts being destroyed.
  • MC-277164 – Music plays in the pale garden.
  • MC-277202 – Differences in the highlight effect of empty slot outlines in the GUI.
  • MC-277213 – Subtitles for cave sounds, creaking heart idle sounds, and pale hanging moss idle sounds are identical but are shown separately.
  • MC-277214 – The sound event associated with the "Creaking sees player" subtitle doesn't exist.
  • MC-277268 – Pufferfish have no hit delay on creakings; they make a loud buzzing noise constantly.
  • MC-277271 – Sniffers can't dig into pale moss.
  • MC-277275 – Crash upon loading chunks when teleporting.
  • MC-277305 – Creakings are able to be pushed around by entities and players when standing on soul sand and mud.
  • MC-277363 – Creakings cannot rotate their heads independently from their bodies.
  • MC-277387 – Evokers run away from creakings faster than other illagers.
  • MC-277549 – Arrows summoned with custom motion don't render correctly.
  • MC-277557 – Creaking Heart has inconsistent and miscolored pixels.
  • MC-277651 – Arrows and tridents glitch when in an explosion or wind charge burst.
  • MC-277657 – Arrows are not correctly affected by rising bubble columns.
  • MC-277658 – Tridents glitch up and down in rising bubble columns.
  • MC-277682 – Arrows and tridents glitch after shooting/throwing them onto magma/soul sand blocks underwater.
  • MC-277742 – Creakings activate for a brief moment when switching from Creative to Spectator mode.
  • MC-277754 – Chunks on the corner of the rendering distance are not synchronized between client and server for the terrain.
  • MC-277776 – Baby cats and ocelots size is changed.
  • MC-277815 – Creakings on a team can still be observed and stopped by teammate players.
  • MC-277833 – Creakings can attack players in the same team as them.
  • MC-277871 – Creaking Hearts do not have a unique place sound.

Notes and references

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