Java Edition 25w18a

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 "field": "(link to Snapshot article, displayed as Snapshot)",
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 "field": " <span style=\"font-size:smaller\"><abbr title=\"decimal\">dec</abbr>: </span>1073742072<br /> <span style=\"font-size:smaller\"><abbr title=\"hexadecimal\">hex</abbr>: </span>400000F8",
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 "footer": "<table style=\"margin: auto; word-break: break-word;\">\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\" >[[Java Edition 1.21.5|<span style=\"margin-right:-0.35em\">◄</span>◄  1.21.5]]</td>\n<td style=\"padding: 0.4em\">'''[[Java Edition 1.21.6|1.21.6]]'''</td>\n<td style=\"padding: 0.4em\" >[[Java Edition 1.21.7| 1.21.7 <span style=\"margin-right:-0.35em\">►</span>►]]</td>\n</tr>\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\">\n[[Java Edition 25w17a|◄  25w17a]]\n</td>\n<td style=\"padding: 0.4em\">''' 25w18a'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition 25w19a| 25w19a ►]]\n</td>\n</tr>\n</table>"
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25w18a is the fourth snapshot for Java Edition 1.21.6 released on April 29, 2025.^[1]

Dried ghast

• The bone block in the recipe has been replaced with soul sand.

Lead

• The slimeball in the recipe has been replaced with a string.
  • This is to make the recipe easier to craft for players.

Bartering

• Piglins can now give dried ghast blocks when bartered with.

Splash potion

• Splash potions distance to affected entities now depends on the closest distance between the entity hitbox and the splash potion hitbox where it landed.
  • If an entity is hit directly by the splash potion, it will receive the full effect of the potion.
  • If the entities are grouped together, they will receive the same effect strength.

Data pack

• The pack format version is now 75.

Entity data

• Added home_pos and home_radius fields to all mobs.
  • Mobs with set home position will limit their pathfinding to stay within the indicated area.
  • Some mobs, like bats, slimes, magma cubes, phantoms and ender dragons may ignore it.
  • Interacting with leashes or riding may change the home position of the mob.

Fonts

• uniform font has been updated to use Unifont 16.0.03.
• Added previously omitted Unifont glyphs for Private Use Areas.
  • Those glyphs are loaded as a separate sub-font minecraft:include/unifont_pua and are not included in any normally used font.
  • Characters in those areas are managed by Under-CSUR (Under-ConScript Unicode Registry), which adds various scripts not present in official Unicode set, like Tengwar or Sitelen Pona.
• Unihex Font Provider
  • Field size_overrides is now optional (defaults to empty list).

Resource pack

• The version is now 59.
• All JSON files (in worlds, packs, configuration, etc.) are now parsed in strict mode.
• The hud/locator_bar_arrow_up and hud/locator_bar_arrow_down sprites are now animated with a standard animation definition in the corresponding .mcmeta files.

Tags

• Updated the #followable_friendly_mobs entity tag to include the happy ghast.

18 issues fixed

From released versions before 1.21

• MC-200925 – Ghasts are not affected by potions thrown on their head.
• MC-262268 – Keyboard navigation does not work in the book and quill GUI.
• MC-264431 – #minecraft:sand tag has two minecraft:suspicious_sand.

From 1.21.3

• MC-278459 – unifont.json contains trailing comma.

From 1.21.4

• MC-279284 – Experience orbs from thrown bottles o' enchanting are very prone to getting stuck inside blocks.

From 1.21.5

• MC-279875 – Cannot diagonally climb slab through suspended scaffolding.
• MC-280281 – Fishing bobbers rapidly jitter when attached to entities that are moving.
• MC-280502 – Translation key snbt.parser.undescore_not_allowed has a typo.
• MC-295879 – Sprint-hitting boats and then getting in them causes the boat to fall through the block underneath.
• MC-295914 – Loot table files accept invalid JSON.
• MC-296784 – The "Welcome to Minecraft" screen is missing its fade out.
• MC-296866 – Predicates of particular namespaces failed to be accessed on /execute.

From the 1.21.6 development versions

• MC-296354 – Happy ghasts aren’t affected by potions thrown on their heads.
• MC-296898 – Happy ghasts' home slightly drift over time.

From the previous development version

• MC-297112 – You cannot use  +  to navigate to tabs within the configure realms menu.
• MC-297114 – The realms menu incorrectly claims that realms are expiring soon.
• MC-297115 – The “This is a Snapshot Realm…” box no longer renders with a black background.
• MC-297184 – 'Realms' is lowercase in mco.errorMessage.realmsService.configurationError..