Java Edition 1.21.9 Pre-Release 1
Minecraft 1.21.9 Pre-Release 1
| Edition | |||||||
|---|---|---|---|---|---|---|---|
| Release date |
September 16, 2025 | ||||||
| Type | |||||||
| Pre-release for | |||||||
| Downloads | |||||||
| Obfuscation maps | |||||||
| Protocol version |
dec: 1073742093 | ||||||
| Data version |
4548 | ||||||
| Resource pack format |
69.0 | ||||||
| Data pack format |
87.1 | ||||||
| Minimum Java version | |||||||
| |||||||
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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 1.21.8|<span style=\"margin-right:-0.35em\">◄</span>◄ 1.21.8]]</td>\n<td style=\"padding: 0.4em\">'''[[Java Edition 1.21.9|1.21.9]]'''</td>\n<td style=\"padding: 0.4em\" >[[Java Edition 1.21.10| 1.21.10 <span style=\"margin-right:-0.35em\">►</span>►]]</td>\n</tr>\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\">\n[[Java Edition 25w37a|◄ 25w37a]]\n</td>\n<td style=\"padding: 0.4em\">''' 1.21.9 Pre-Release 1'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition 1.21.9 Pre-Release 2| 1.21.9 Pre-Release 2 ►]]\n</td>\n</tr>\n</table>"
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1.21.9 Pre-Release 1 (known as 1.21.9-pre1 in the launcher) is the first pre-release for Java Edition 1.21.9, released on September 16, 2025 with some changes to the mannequins and several bug fixes.[1]
Changes
Mobs
- Lightning bolts now clean oxidation off copper golems.
- Now only tries to open chests that are neighboring blocks when it's a passenger.
Non-mob entities
- Mannequins' description text can now be configured.
- Now accept
minecraft:profilecomponent from spawner items.- Modified data fields:
profile- now has the same format as aminecraft:profilecomponent (which has been extended to allow overrides).- Defaults to
{}(i.e. static profile with bothidandnamemissing).
- Defaults to
- New data fields:
pose- The pose of the mannequin.- Valid entries:
standing,crouching,swimming,fall_flying,sleeping.
- Valid entries:
immovable- Optional boolean specifying that the mannequin cannot be moved (defaults tofalse).description- Optional text component shown where a player'sbelow_scorescore would show.- The default "NPC" (
entity.minecraft.mannequin.label) text is shown if omitted.
- The default "NPC" (
hide_description- Optional boolean specifying that no description should be shown at all.- A mannequin with the description hidden displays as if a player had no
below_scoredisplay.
- A mannequin with the description hidden displays as if a player had no
- Modified data fields:
Command format
General
- Server commands now run from the respawn dimension by default instead of always the Overworld.
- Now also prints a clickable text to summon a mannequin with the resolved profile.
- Is no longer limited to the Overworld.
- This means players can respawn e.g. in the Nether when they have no bed or respawn anchor.
- It now also takes in an optional
pitchargument.
- Now optionally takes in a pitch argument.
General
minecraft:profile- Profiles can now also have additional fields that can replace various values used for rendering.
- If any of the fields are omitted, the value from the resolved profile is used, even if the profile resolved to the default skin.
- New fields:
texture- Optional namespaced ID of the skin texture to use for rendering.- The skin is specified relative to the
texturesfolder and with a .png suffix. - e.g.
entity/player/wide/stevewill use the default wide Steve skin.
- The skin is specified relative to the
cape- Optional namespaced ID of the cape texture to use for rendering.- When specified, uses the same format as the
texturefield.
- When specified, uses the same format as the
elytra- Optional namespaced ID of the elytra texture to use for rendering.- When specified, uses the same format as the
texturefield. - If this value is not present either as override or in player profile, mannequins using this profile will use the cape texture, or if that is also not present, the default elytra texture when wearing elytra.
- When specified, uses the same format as the
model- Optional model type, one ofwideandslim.
- The pack format version is now
87.1.
minecraft:player- Changes to the
respawnobjectanglehas been renamed toyawand is now a required field.pitchhas been added as a required field.dimensionis now a required field.
- Changes to the
minecraft:copy_name- The
sourcefield now accepts new context values:direct_attackertarget_entityinteracting_entity
- The
minecraft:copy_components- The
sourcefield now accepts new context values:thisattackerdirect_attackerattacking_playertarget_entityinteracting_entitytool
- The
Minecraft Server Management Protocol
- Notifications now use
minecraft:notification/prefix instead ofnotification:.
Fixes
From released versions before 1.21
- MC-160528 – End portals do not negate fall damage.
- MC-243759 – Explosions won't damage an entity if the distance to its eyes is 0.
From 1.21.8
- MC-301883 – Entities going through portals with their
Motionset to more than10on an axis have theirMotiontag reset.
From the 1.21.9 development versions
- MC-300257 – Lightning does not reset copper golem oxidation.
- MC-300294 – Copper golems pathfind to chests incorrectly.
- MC-300687 – The copper chains and bars aren't organized correctly in the Creative inventory.
- MC-300881 – The skin preview in the skin reporting screen is no longer interactive.
- MC-301409 – Acceleration power of fireballs and wind charges gets halved when they are redirected by explosions.
- MC-301414 – Scraping oxidation off double chests doesn't produce particles on the half of the chest that wasn’t directly interacted with.
- MC-301424 –
entity_dataitem component detection is broken in resource packs. - MC-301541 – Copper golems no longer sort items when in minecarts.
- MC-301569 – Sounds of copper chests and all variants are too quiet and sound low-quality compared to before.
- MC-301573 – Relative teleportation across dimensions is inconsistent.
- MC-301798 – Copper golems do not open chests with specific transparent/non-full blocks above them.
- MC-301814 –
CustomNameVisibledoes not work for mannequins (for the name, not the NPC annotation). - MC-301815 – Mannequin data is sometimes lost when using spawn eggs.
- MC-301819 – Mannequins' name tags are visible when on a team and ridden.
- MC-301862 – When clicking a command suggestion in chat, it occasionally selects half of the new word.
- MC-301893 – When a copper golem is leashed by a player and then oxidizes into a statue, it will not drop the lead.
- MC-301951 – Misleading description for
operator_user_permission_levelin server management protocol documentation.
From the previous development version
- MC-301979 – Copper golems no longer properly check chests.
- MC-301984 – Teleporting a player to their own position is now jittery/frozen.
- MC-301991 –
deprecated.jsonhas some renamed keys pointing to text values instead of the new keys. - MC-302032 – Static profiles no longer resolve texture data unless an id or name is provided.
- MC-302089 – Game crashes when flying mobs start pathfinding in debug mode.
- MC-302092 – Crash when placing iron bars next to stairs, when stairs are added to
#barstag. - MC-302094 – Crash when adding blocks to
#copper_cheststhen placing it next to actual copper chests. - MC-302095 – Crash when adding blocks to
#lightning_rodsand summoning a lightning over it. - MC-302096 – Crash when adding blocks to
#wooden_shelves, placing it next to wooden shelf, then powering the shelf.
Videos
Videos made by Slicedlime:
References
- ↑ "Minecraft 1.21.9 Pre-Release 1" – Minecraft.net, September 16, 2025.
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