Java Edition 25w19a

25w19a is the fifth snapshot for Java Edition 1.21.6 released on May 6, 2025.^[1]

Projectiles

• Projectiles now have a target tolerance margin that changes over time.
  • All projectiles start with no margin for the first two ticks of their flight.
  • After that, the target margin will expand by 0.05 blocks per tick until it reaches the previous fixed 0.3 blocks margin.
  • This allows for better precision close to the shooting player or entity, while still allowing for some collision leeway when the projectile is further away.

Attributes

• The scale attribute for the happy ghast now has a limit of 1.0.

Data pack

• The pack format version is now 76.
• --quickPlaySingleplayer command line argument can now be used without an identifier to launch into the last played world.

Entity format

• tnt
  • The entity that primed the TNT is now stored in an optional owner field (UUID of Living entity).
• vex
  • The owner of a vex is now stored in an optional owner field (UUID of Mob).

Resource pack

• The version is now 60.
• Panorama textures must now all be the same size, and square.

Shaders

• Shader fog
  • The fog is now split into environmental and render-distance-based.
  • Previously both those concepts were mixed in the same uniforms.
  • Environmental fog is supposed to represent the "fogginess" of the environment the player is in: lava, water, and now also atmosphere.
  • Render distance fog is supposed to obscure the border of visible terrain.
  • Environmental fog uses spherical distance to determine its intensity, render distance fog uses cylindrical distance.
  • The resulting fog value for any given vertex is the maximum of both.
• Fog uniform block
  • FogStart was renamed to FogRenderDistanceStart and now represents the render distance fog start.
  • FogEnd was renamed to FogRenderDistanceEnd and now represents the render distance fog end.
  • FogEnvironmentalStart is new and represents the start of environment-based fog.
  • FogEnvironmentalEnd is new and represents the end of environment-based fog.
  • FogShape was removed. Render distance fog is now cylindrical and environmental for is spherical.

Sounds

• The sound event block.dried_ghast.hit has been removed.

UI sprites

• mob_effects.png-atlas has been merged into gui.png-atlas and no longer exists.
  • This means Mob Effect sprites now support GUI sprite scaling properties.

20 issues fixed

From released versions before 1.21

• MC-69821 – TNT "forgets" the player that ignited it when the world is reloaded.
• MC-118430 – Vex summoner is not stored in NBT despite being used for AI task.
• MC-118432 – Vex summoner is not reset once it is dead.

From 1.21.1

• MC-277486 – Mob effect icons ignore "scaling" parameter in mcmeta files.

From 1.21.3

• MC-277903 – Creative inventory tab icons can display item cooldown overlay.

From 1.21.5

• MC-295690 – Players stay on fire for a while after barely touching fire.
• MC-296701 – Transformed entities do not retain their custom_data component.
• MC-296709 – All non-default jukebox_playable components are deleted from existing items when updating past 1.21.4.
• MC-297347 – Tamed animals no longer sit when their owner changes dimension.
• MC-297461 – Equipment and sleeping pos data cannot be loaded in 1.21.4, but can be loaded in 1.21.5 to bees spawned from bee nest and bee hive.

From the 1.21.6 development versions

• MC-296432 – The ability to stand on top of happy ghasts which have a larger scale attribute becomes unreliable or even impossible.
• MC-296460 – Debug crosshair renders incorrectly.
• MC-296494 – The player sometimes falls from a happy ghast when reconnecting to a world.
• MC-296797 – The movement of happy ghasts for non-controlling passengers is jittery.
• MC-296813 – The panorama isn't slightly blurred anymore which causes some "flickering" effects.
• MC-296970 – The dried ghast block has a hit sound event.
• MC-297142 – The "Leave Bed" button is invisible.
• MC-297235 – Clouds not fully rendered depending on angle when very high above the world.
• MC-297271 – Waypoint packet is handled by network thread instead of render thread, causing crash.

From the previous development version

• MC-297339 – Sign text is non-functional.