Minecraft Snapshot 23w03a

We're now releasing the first snapshot for Minecraft 1.19.4. This release contains new accessibility functionality, new commands and plenty of bug fixes!

Happy mining!

Changes

• Vexes now use a separate charging animation when empty-handed
• Armor Stands now preserve custom names when placed and broken

Accessibility

• Added an accessibility onboarding screen for players launching the game for the first time
• Added arrow key navigation
• The Resource Pack screen is now keyboard-navigatable
• Auto-Jump is now off by default
• Added a new "Notification Display Time" accessibility option
  • Changes how long notifications such as unlocked recipes, advancements, subtitles and selected item names are visible for

Arrow key navigation

• Menu screens can now be navigated by using the arrow keys
• When navigating with arrow keys, sliders need to be activated by pressing Enter or Space to start changing the value

Technical Changes

• The data pack version is now 11
• Added a network protocol feature for forcing bundle of packets to be processed within same client tick
• Added fallback fields to translate chat components
• Out-of-bound arguments in translate formats are no longer silently ignored
• The clone command now supports cloning to and from different dimensions
• A new string source is now available for the data modify command
• New execute sub-commands

Network Protocol

• Clients now reset their Secure Chat session state when receiving the login packet

Packet bundles

• Added new delimiter packet to clientbound game protocol
• All packets between two delimiters are guaranteed to be processed within same tick
• For security reasons this feature is not supported in serverbound direction

Block Behavior

• Fire burns out faster in certain biomes, and this is now controlled by the increased_fire_burnout biome tag

Mob Spawning

• The only_allows_snow_and_gold_rabbits biome tag has been renamed to spawns_gold_rabbits to match its behavior
• White Rabbit variants are now controlled by the spawns_white_rabbits biome tag
• Fox variants are now controlled by the spawns_snow_foxes biome tag

Mob Behavior

• Snow Golems melting in warm biomes is now controlled by the snow_golem_melts biome tag

Commands

clone

The clone command now supports specifying the source and target dimensions. New syntax:

clone [from <sourceDimension>] <begin> <end> [to <targetDimension>] <destination> ...

Parameters:

• sourceDimension: id of dimension to clone from
• targetDimension: id of dimension to clone to

data

New source available:

• string <entity|block|storage> [path] [start] [end] - reads a value as text, resulting in a string value

New arguments:

• start: Index of first character to include at the start of the string
• end: Index of the first character to exclude at the end of the string

execute

execute if|unless

New conditions available for the execute if|unless sub-command:

• execute if|unless loaded <pos> - checks if the position given is fully loaded (in regard to both blocks and entities)
• execute if|unless dimension <dimension> - checks if the execution is in a matching dimension

Parameters:

• pos: Block position to check
• dimension: A dimension id

execute on

New execute sub-command for selecting entities based on relation to the current executing entity:

• execute on <relation>

Relations:

• vehicle - entity that the executing entity is riding
• passengers - all entities directly riding the executing entity (no sub-passengers)
• controller - entity that is controlling the executing entity (for example: first passenger in a boat)
• owner - owner of the executing entity, if it is a tameable animal (like cats, wolves or parrots)
• leasher - entity leading the executing entity with a leash (might be a leash knot in case of being attached to a fence)
• target - attack target for the executing entity
• attacker - last entity that damaged the executing entity in the previous 5 seconds

If the relation is not applicable to the executing entity or there are no entities matching it, selector returns zero elements.

title

• All time arguments to title times are now time durations and work with t, s and d suffixes

weather

• The duration of the weather change now matches the game's regular weather cycle if not specified
• The duration parameter is now a time duration in ticks and works with t, s and d suffixes
  • To retain existing functionality, you need to add an s suffix to pre-existing commands

ride

New command to allow entities to start or stop riding other entities

Syntax:

• ride <target> mount <vehicle>
  • Makes a single target mount a single vehicle
  • The command will fail if:
    • vehicle is a player
    • target is already riding a vehicle
    • target and vehicle are the same entity
    • vehicle is already a passenger (direct or indirect) of target
• ride <target> dismount
  • Dismounts target from any vehicle it is riding
  • Fails if target is not riding anything

Game Rules

• Added commandModificationBlockLimit, controlling the maximum number of blocks changed in one execution of clone, fill and fillbiome

Chat components

Translation fallback

Added an optional fallback field to translate text components.

• The new field is a string that will be used in place of translation if it is missing
• If fallback is missing, the old behavior (i.e. using the key itself as the translation) is preserved

Experimental Features

Note block interaction

• Mob heads can now be placed on top of note blocks without sneaking

Fixed bugs in 23w03a

• MC-26678 - Damage wobble no longer shows direction of incoming damage
• MC-30403 - Sprinting isn't canceled when dismounting rideable entities while sprinting
• MC-121048 - When an entity dies, the combat tracker only records the killing blow
• MC-122595 - /weather command with duration 0 has the same weather for longer time
• MC-136534 - All command blocks think they're facing south with caret notation
• MC-149144 - Multiple buttons can be selected by pressing another button and Tab
• MC-155433 - Minecart with hopper not picking matching items from a mixed pile
• MC-165595 - Guardian beam does not render when over a certain "Time" in level.dat
• MC-181832 - The "/spreadplayers" command doesn't spread entities in the specified dimension
• MC-191942 - The buttons in the multiplayer menu are not evenly spaced
• MC-222518 - Skeleton/Zombie Horse's & Donkey/Mule's saddles and chests are outdated/have errors
• MC-224960 - The spectate command does not work between dimensions
• MC-230678 - Cauldron fills with powder snow in frozen ocean biome while it's visually raining
• MC-233893 - Burning mobs won't get extinguished by rain in warm patches of Frozen Ocean biome
• MC-235260 - Hopper minecart at (0, 0, 0) transfers items slower than normal
• MC-247836 - Riptide doesn't work in rain within a frozen ocean biome
• MC-252773 - Goat Horn without instrument NBT and with other NBT data (such as text) does not play
• MC-255545 - Magma Cube shadows do not change with size
• MC-255811 - Level#isRainingAt(BlockPos) always returns false for snowy and frozen biomes, even when it is raining
• MC-256292 - Goats don't spawn on grass after initial world generation
• MC-256555 - Camel sits down for a split second when spawned
• MC-256576 - Players become the controlling passengers of unsaddled camels when mounting them while other players are already riding them
• MC-256838 - The facing direction of the camel doesn't match
• MC-257082 - Sprinting whilst riding an entity or flying with elytra changes your field of view
• MC-257346 - Vexes with empty hand make obscene gesture
• MC-257418 - Camels sometimes sit down for a split second when receiving damage
• MC-257755 - Elements within the realms menu are not selected in order when using the TAB key if you're not currently a member of any realm
• MC-257875 - Fire charges aren't consumed when igniting creepers using them in survival or adventure mode
• MC-258163 - ClientboundSectionBlocksUpdatePacket serialization breaks after 2^19 block states
• MC-258173 - Entering an End Portal whilst sleeping causes the bed to be occupied permanently
• MC-258246 - "Telemetry Data" button is missing an ellipsis
• MC-258295 - Villager AI broken when workstation is nearby
• MC-258430 - Camels with large LastPoseTime values offset the player view model strangely
• MC-258953 - Out of memory screen has raw message in the title

Get the Snapshot

Snapshot are available for Minecraft: Java Edition. To install the Snapshot, open up the Minecraft Launcher and enable snapshots in the "Installations" tab.

Testing versions can corrupt your world, so please backup and/or run them in a different folder from your main worlds.

Cross-platform server jar:

• Minecraft server jar

Report bugs here:

• Minecraft issue tracker!

Want to give feedback?

• For any feedback and suggestions on our upcoming 1.20 features, head over to the dedicated Feedback site category. You can also leave any other feedback on the Feedback site. If you're feeling chatty, join us over at the official Minecraft Discord.