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21w37a[1] is the first snapshot for Java Edition 1.18, released on September 15, 2021, which brings more parity with Bedrock Edition and fixes bugs.

Changes

Blocks

Enchanting Table
  • Now emits a light level of 7.
Cave Vines, Kelp, Twisting Vines and Weeping Vines
  • Will stop growing if shears are used on the tip.

Mobs

Axolotls
  • Now only spawn in lush caves.
  • Now have their own mob cap.
Illagers
Goat

General

Audio
  • The device the game outputs audio to can now be chosen in-game.
Options
  • Can now disable lightning flashes, which prevents lightning from making the sky flash. Lightning bolts themselves will still appear.
  • Can now prioritize chunk updates to "nearby", "by player", or "none".
  • The Sneak and Sprint, and Auto-jump options have been moved to the Controls tab.
Splashes
  • The splash "[this splash text has been delayed until part 2]" has been changed to "[this splash text is now available]".
Subtitles
  • Added subtitles for various bundle sounds.
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 before Java Edition 1.6.4).
    • An error will be shown when attempting to open these worlds.
  • Worlds from before 21w37a currently cannot be opened, though this will change before 1.18 is released.
  • Removed length limits for scoreboards, score holders and team names.
  • Data pack format has been increased to 8.

Fixes

44 issues fixed
From released versions before 1.18
  • 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-123277 – Too long scoreboard objectives and team names are not detected when commands are parsed.
  • MC-129266 – Jagged ocean transitions and slower biome generation.
  • MC-138801 – The interactions between a biome and another biome and its variants are inconsistent.
  • MC-140690 – Giant Spruce Taiga Hills has 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-166423 – Splash water bottles don't damage endermen.
  • MC-182362 – Score callbacks with a too long name break callback chain.
  • MC-202376 – Rabbits, instead of spawning on snow blocks, spawn on snow layers.
  • MC-208601 – Axolotls do not avoid danger when pathfinding.
  • MC-212113 – Glow Lichen can spawn underwater whilst not in a cave.
  • MC-213779 – FPS dramatically decreases when looking up in world with large height.
  • MC-214783 – Oceans generate with stone floors.
  • MC-214797 – Pointed dripstone can generate floating at transitions between local water levels.
  • MC-214799 – Aquifiers sometimes create air pockets.
  • MC-214864 – Hard edges when new caves generate near surface.
  • MC-214989 – Isolated floating mineshaft platform.
  • MC-215296 – Mineshafts often don't generate in floating island worlds.
  • MC-215876 – Dirt can generate below y=0 from mineshafts.
  • MC-216784 – Ruined Portals don't generate below y=0.
  • MC-216952 – Some chunks interrupting with cave systems filled with blocks.
  • MC-216967 – Kelp & Seagrass can generate in aquifers.
  • 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-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 – New extended height message goes behind the scrolling bar.
  • MC-226184 – Axolotls pathfinding to water can sometimes fall in wide holes.
  • 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-231721 – Dinnerbone Animals do not look at food correctly.
  • MC-231863 – Game crashes when trying to access the realms settings.
  • MC-233050 – #lava_pool_stone_replaceables tag name is misleading.

Video

Video made by slicedlime:

References

  1. "Minecraft Snapshot 21w37a" – Minecraft.net, September 15, 2021
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