Java Edition 21w37a

Minecraft 21w37a

Edition	Java Edition
Release date	September 15, 2021
Type	Snapshot
Snapshot for	1.18
Downloads	Client (.json) Server
Obfuscation maps	Client Server
Protocol version	dec: 1073741865  hex: 40000029
Data version	2834
Resource pack format	7
Data pack format	8
Minimum Java version	Java SE 16
◄◄  1.17.1 1.18 1.18.1 ►► ◄  1.18 experimental snapshot 7 21w37a 21w38a ►

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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  1.17.1|<span style=\"margin-right:-0.35em\">◄</span>◄   1.17.1]]</td>\n<td style=\"padding: 0.4em\">'''[[Java Edition 1.18|1.18]]'''</td>\n<td style=\"padding: 0.4em\" >[[Java Edition  1.18.1|  1.18.1 <span style=\"margin-right:-0.35em\">►</span>►]]</td>\n</tr>\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\">\n[[Java Edition  1.18 experimental snapshot 7|◄   1.18 experimental snapshot 7]]\n</td>\n<td style=\"padding: 0.4em\">''' 21w37a'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition  21w38a|  21w38a ►]]\n</td>\n</tr>\n</table>"
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21w37a is the first snapshot for Java Edition 1.18, released on September 15, 2021, which adds the contents of the previous seven experimental snapshots and brings more parity with Bedrock Edition.

Additions

General

Commands

• /jfr
  • When enabled, begins profiling with Java FlightRecorder, as well as the following custom events:
    • minecraft.ServerTickTime: Sampling event exposing average server tick times in intervals of a second
    • minecraft.ChunkGeneration: Time taken to generate individual chunk stages
    • minecraft.PacketRead / minecraft.PacketSent: Network traffic
    • minecraft.WorldLoadFinishedEvent: Initial world loading duration
  • The profiling can be stopped in-game by using /jfr stop.

Font

• Added illageralt, the rune-like font from Minecraft Dungeons.
  • Currently only usable via commands

Loot tables

• Added the type field, which is mandatory.
  • Written into BlockEntityTag.id to ensure that the tag can be migrated correctly between versions.

Options

• Can now disable lightning flashes, which prevents lightning from making the sky flash. Lightning bolts themselves still appear.
• The device the game outputs audio to can now be chosen in-game.
• Added "Priority updates" to video settings.
  • Determines as to which chunk sections are updated synchronously in a single frame.
  • Three options:
    • nearby, which corresponds to how chunk sections were updated before 21w37a, by player and none, which reduce stuttering when placing or removing blocks.
    • However, the latter two options may cause rare visual delays in world updates. These options also appear to be improperly capitalized.

Subtitles

• Added subtitles for various bundle sounds.

Changes

Blocks

Enchanting table

• Now emits a light level of 7.

Cave vines, kelp, twisting vines and weeping vines

• Now stop growing if shears are used on the tip.
  • This action changes the age block state of the tip to 25.

Snow block

• Reverted change allowing plants to be placed on snow blocks.
  • This reversion results in the lack of vegetation in the grove biome.

Items

Bundle

• Has been removed from the creative inventory once again.
• Can once again no longer be crafted.
• Only accessible through commands once again.

Crossbow

• Durability has been increased to 465.

Elytra

• Reverted changes from experimental snapshot 7.

Mobs

Axolotls

• Now have their own mob cap.

Vindicators, pillagers, and evokers

• Don't attack baby villagers anymore.

Goats

• Now only spawn in snowy slopes, stony peaks, lofty peaks, and snow capped peaks biomes.

Feedable mobs

• All feedable mobs (except sheep) named "Dinnerbone" now look at the player correctly.

General

• Reverted changes of spawners from experimental snapshot 2.

World generation

Stone shores

• Changes of diorite, andesite, or granite generated as strips in experimental snapshot 4 is reverted.

Stony peaks

• Changes of andesite, granite and gravel generated as strips in experimental 4 is reverted.

General

Data packs

• Version number has been increased to 8.

Options

• Sneak, sprint, and auto-jump options have been moved to the "Controls" menu.
• Render distance now causes chunks to load in a cylinder shape around the player instead of a square.

Scoreboards

• Removed length limits for scoreboards, score holders and team names.

Splashes

• The splash "[this splash text has been delayed until part 2]" has been changed to "[this splash text is now available]".

Tags

• Renamed the lava_pool_stone_replaceables block tag to lava_pool_stone_cannot_replace.

Other

• Worlds last opened before Java Edition 1.2 can no longer be opened.
  • These worlds must be opened in a version prior to 21w37a (preferably between Java Edition 1.2 and Java Edition 1.6.4).
  • An error is shown when attempting to open these worlds.

Fixes

69 issues fixed

From released versions before 1.18

• MC-7200 – Cave/tunnel generation may cut tunnels a bit too soon.
• MC-29274 – Withers will not pursue players in survival mode unless attacked.
• MC-30560 – River through eroded badlands biome generates floating rock formations at water surface.
• MC-54545 – Client render distance doesn't adjust to server render distance if they are different, causing faulty chunk loading.
• MC-65628 – Desert pyramids generate underground when using amplified or custom terrain.
• MC-72831 – Water lakes can generate in deserts.
• MC-85975 – Slimes don't spawn in the swamp hills biome.
• MC-101917 – Andesite, diorite and granite won't generate above a height of about 80.
• MC-123277 – Too long scoreboard objectives and team names are not detected when commands are parsed.
• MC-125033 – Old cave and ravine generation gets cut off unnaturally on chunk borders near water.
• MC-126133 – Undercover ravines sometimes generate cut off at chunk borders.
• MC-129266 – Jagged ocean transitions and slower biome generation.
• MC-132175 – Beaches generate along swamp hills when bordering an ocean.
• MC-132429 – Sand beaches generate when bordering gravelly mountains biomes.
• MC-134407 – Ocean ravines spawning underground with a stone roof on top.
• MC-138801 – The interactions between a biome and another biome and its variants are inconsistent.
• MC-140151 – Modified jungle edge biomes only generate when a jungle borders a swamp hills biome.
• MC-140690 – Giant spruce taiga hills have no difference with giant spruce taiga.
• MC-159025 – Drowned do not spawn in warm ocean biomes.
• MC-160710 – Chat messages written while sleeping are deleted after waking up.
• MC-166238 – Trees can generate on mycelium.
• MC-166423 – Splash water bottles don't damage endermen.
• MC-167277 – Swamp hills don't naturally generate seagrass.
• MC-167800 – Rabbits do not spawn on snow block, podzol and coarse dirt.
• MC-175929 – Ice spikes get cut off below height limit on AMPLIFIED worlds.
• MC-182362 – Score callbacks with a too long name break callback chain.
• MC-186042 – Plains biome is always generated when a swamp borders a desert, snowy tundra or snowy taiga.
• MC-188096 – Gravelly mountains+ is no different than gravelly mountains.
• MC-190363 – Some biomes generate as "Single biome" worlds in "Floating islands" world type.
• MC-199298 – Strongholds don't generate in bamboo jungles.
• MC-200230 – Anomalous stripes/grid ice generation in frozen ocean biome.
• MC-202376 – Rabbits, instead of spawning on snow blocks, spawn on snow layers.
• MC-208352 – Dark forest hills don't generate small patches of plains or sunflower plains, but dark forest does.
• MC-208353 – Several hills biomes do not generate sporadically replacing patches of their regular biome counterparts.
• MC-208601 – Axolotls do not avoid danger when pathfinding.
• MC-212113 – Glow lichen can spawn underwater whilst not in a cave.
• MC-213779 – FPS drops when looking up in a tall world (4064 blocks).
• MC-214335 – Flower forest is much steeper than regular forest.
• MC-214783 – Oceans generate with stone floors.
• MC-214797 – Pointed dripstone can generate floating at transitions between local water levels.
• MC-214799 – Aquifers sometimes create air pockets.
• MC-214864 – Hard edges when new caves generate near surface.
• MC-215062 – Weird aquifer barrier generator and water in incorrect states.
• MC-215296 – Mineshafts often don't generate in floating island worlds.
• MC-215876 – Dirt can generate below Y=0 from mineshafts.
• MC-216362 – Jukeboxes that have been placed don't stack with jukeboxes that have not been placed.
• MC-216448 – River generates over a ravine.
• MC-216784 – Ruined portals don't generate below Y=0.
• MC-216952 – Some chunks interrupting with cave systems filled with blocks.
• MC-216967 – Kelp and seagrass can generate in aquifers.
• MC-217136 – Random noise pillars generating mid air.
• MC-217465 – Unnatural shape looking like a chunk border but appears to be completely unrelated to chunk borders.
• MC-217509 – Inefficient generation of aquifers, noise caves and ore veins.
• MC-219774 – Magma blocks spawn everywhere underwater in 21w10a.
• MC-219946 – Weird flat sections of terrain.
• MC-221679 – End fog loses its gradient when under Y=0.
• MC-221777 – Horses, donkeys, mules, llamas, and trader llamas do not follow players holding food.
• MC-221815 – Flat roofs in underwater caves.
• MC-221917 – Dripstone, pointed dripstone, and cave magma generate in oceans.
• MC-222051 – Iron ore generation was not increased in 21w13a.
• MC-222379 – Magma can spawn under air in underwater caves.
• MC-223044 – Floating water can generate in ravines.
• MC-223051 – Dripstone can generate in surface lakes.
• MC-223148 – Extended height message goes behind the scrolling bar.
• MC-225781 – The noise cave lava level and the cave carver lava level generate 1 block apart.
• MC-227244 – Ore blocks from ore veins float in underwater magma ravines.
• MC-230343 – Parity issue: Enchanting tables do not emit a light level of 7.
• MC-231863 – Game crashes when trying to access the Realms settings.
• MC-233050 – #lava_pool_stone_replaceables tag name is misleading.

Video

Videos made by Slicedlime: