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

Minecraft Snapshot 23w03a