How To Fix Minecraft Snapshot Lighting Glitch

Minecraft Caves and Cliffs Update Prototype (Image credit: Mojang Studios)

What y'all need to know

Mojang Studios is hard at work on 1.xviii 'Caves and Cliffs Update' Role Two, culminating in a string of Experimental Snapshots.
At present, Mojang is working to port those experimental features to regular Minecraft: Java Edition snapshots for more players to test.
Minecraft: Coffee Edition Snapshot 21w37a is now rolling out to players with a huge list of new features, changes, and more.
This includes a ton of world generation tweaks, new biomes, technical updates, bug fixes, and a whole lot more.

Minecraft is gearing up for its next major update, the second one-half of the Caves and Cliffs Update, which will feature a ludicrous number of new features and changes. Mojang Studios has been testing many of these features through early Experimental Snapshots on PC, only they're now ready to begin testing these features with a greater number of people through regular snapshots.

Minecraft: Java Edition Snapshot 21w37a is at present bachelor for PC testers, and joins the earlier released Minecraft: Bedrock Edition Beta i.17.40.20 by beginning to exam some of the massive alterations arriving in the time to come update, including new biomes, world generation features, bug fixes, technical updates, and more. This private snapshot is larger than many full-blown Minecraft updates, then at that place's a lot to unpack here.

This is all happening as Mojang Studios prepares for Minecraft Live 2021, its yearly event that will share new announcements and reveals for the future of Minecraft to fans next month.

Minecraft is i of the greatest games ever made, and the Java Edition certainly earns its designation as i of the best PC games. This is further proven past the extensive listing of best Minecraft toys and gifts, which includes something for everyone.

The full changelog for Minecraft: Java Edition Snapshot 21w37a includes:

New features

Added dissonance caves and aquifers
Added Dripstone Caves underground biome
Added Grove biome
Added Lofty peaks biome
Added Lush Caves underground biome
Added Meadow biome
Added Snowcapped peaks biome
Added Snowy slopes biome
Added Stony peaks biome
New ore distribution and big ore veins
Overworld build and generation limits have been expanded

Blocks

Enchanting Tables now emit a depression amount of light
Using shears on the tip of a Cave Vine, Twisting Vine, Weeping Wine or Kelp now causes it to cease growing

Dripstone Caves

Contains enough of Pointed Dripstone and Dripstone Block on the floors and ceilings, and small pools of water
In some places, you'll find larger stalagmites, stalactites, and columns built from Dripstone Blocks
Contains extra copper ore

Groves

Snowy terrain with big bandbox trees and powder snow traps. Might want to article of clothing leather boots!
Tends to generate on high-distance terrain beneath mountain peaks or on hilltops
Spawns wolfs, rabbits, and foxes

Large ore veins

Ore veins are large, rare, snake-similar underground ore formations
Copper veins class betwixt y 0 and y 50 and are mixed with Granite
Iron veins course below y -60 and y -8 and are mixed with Tuff

Lofty Peaks

Dramatic jagged mountain peaks with snow and stone
Spawns goats

Lush Caves

Moss covers the floors and ceilings
Spore Blossoms grow from the ceiling and drip particles
Contains Clay pools with Dripleaf plants growing out of them
Contains Azalea Bushes and Flowering Azalea Bushes
The Azalea Tree loves to have its roots in Lush Caves, so if you find an Azalea Tree (either overground or in a cave) you know there is a Lush Cave beneath yous
Cave Vines with Glow Berries grow from the ceiling and light up the caves

Meadows

Big grassy and flowery biome that tends to generate high upwardly on plateaus or next to large mountain ranges
Sometimes contains a lonely tall oak or birch tree, often with a bee nest
Spawns donkeys, rabbits, and sheep

Mob spawning

Monsters now but spawn in places where the light from blocks is 0 (skylight nonetheless prevents spawning like before)
Stock-still an issue where players in multiplayer tin face more or far fewer enemies than intended, especially when other players are flight

New ore distribution

Changed ore generation to match the new world height, and to add more strategy to mining
There is no longer a single y level that is all-time for all ores, you demand to brand tradeoffs
Atomic number 26 ore generates below y 72, with a potent bias towards y xvi
Atomic number 26 ore also generates above 112, with more iron ore every bit you go higher
Copper ore generates between y 0 and y 96, with a potent bias towards y 48
Copper ore generates in larger amounts in the dripstone caves biome
Lapis lazuli generates below y 64, with a strong bias towards y 0. Withal, Lapis below y -32 or above y 32 cannot generate exposed to air. Information technology will either be cached or within h2o
Coal generates above y 0, with a strong bias towards y 96 and to a higher place
Coal has reduced air exposure, so you lot volition find more than coal cached or underwater than exposed to air
Gold generates beneath y 32, with a stiff bias towards y -16
Extra gold tin can (notwithstanding) be institute in badlands biomes
Redstone ore generates below y 16. Redstone ore generation gradually increases equally you lot go below y -32 and further down
Diamond generates below y xvi, with more diamond the lower you go
Diamonds have reduced air exposure, so you will find more diamonds cached or underwater than exposed to air

Noise caves and aquifers

Noise caves are a new fashion of generating caves, providing more natural variety. They can get actually huge sometimes!
Noise caves come in three flavors:
- Cheese caves. Like the holes in swiss cheese. These often form caverns of various size
- Spaghetti caves. Long squiggly tunnels, sometimes wide like tagliatelle
- Noodle caves. Thinner, squigglier, and more than claustrophobic variant of spaghetti caves
No, they aren't loud. The "dissonance" role of noise caves is a technical term and has nil to do with audio
The old cavern carvers and canyons withal generate, combining with the noise caves to form interesting cave systems
As with carvers, when noise caves intersect the surface they course cave entrances
An aquifer is an area with local water level, independent of sea level
Aquifers are used during earth generation to generate bodies of water inside dissonance caves
This sometimes results in large secret lakes! They can also grade within mountains and on the surface
Aquifers below y0 will sometimes exist lava aquifers instead of water aquifers
Magma Blocks sometimes generates at the bottom of underground bodies of water
Underwater cave carvers and underwater canyons take been removed, since aquifers are used to generate water in caves instead

Options

Added an accessibility selection to stop the sky flashing during thunderstorms
Added an selection to specify the audio device used by the game
Added "Toggle Sprint" and "Toggle Sneak" to the Controls settings
Moved Keybinds out to their own settings screen, accessible from Controls

Snowcapped Peaks

Smooth mount peaks with ice and snowfall
Spawns goats and yeti. No actually just goats

Snowy Slopes

Very snowy terrain that tin can hide powder snow traps. Might want to wear leather boots!
Tends to generate on high-distance terrain beneath mountain peaks or on hilltops
Spawns rabbits and goats

Stony Peaks

Stony mountain peaks that may be jagged or smooth
Spawns goats
Contains strips of calcite sometimes

World generation

Generation range and build limits have been expanded by 64 blocks up and 64 blocks down, to a full range of 384 blocks
Hush-hush features, structures, and caves generate all the fashion down to y-64
Exception: Diorite and Granite and Andesite and Dirt don't generate beneath y0
Tweaked size and positioning of Diorite, Andesite & Granite generation
Dripstone clusters can no longer be found in normal caves, only in dripstone caves biome
Starting from y0 and below deepslate gradually replaces all stone
Deepslate blobs no longer generate above y0
The terrain shape and elevation varies dramatically, independently from biomes. For case, forests and deserts could form upwards on a hill without needing a special biome just for that
Less diorite/granite/andesite generates above y 60
Strips of gravel can generate in stony shores
Swamp trees can abound in water 2 blocks deep (instead of just 1 block deep)

Changes

Illagers (Vindicator, Pillager, Evoker) no longer attack baby villagers
Axolotls now just spawn in lush caves
Axolotls at present take their own, carve up, mob cap
Raised the cloud level from 128 to 192

Technical changes

Replaced the clientbound clamper update network packet with another one which additionally contains low-cal update data. A separate low-cal update packet nonetheless exists and is sent when a light update happens without chunk update
View distance at present causes chunks to load cylindrically around players instead of in a foursquare
Information virtually the world generation noise is at present displayed on the debug screen
Added illageralt, rune-like font from Minecraft Dungeons (currently only usable via commands)
Added startup option --jfrProfile and control jfr to outset profiling with Java FlightRecorder also every bit a few custom events
Boodle tabular array functions set_contents and set_loot_table now require type field with valid block entity blazon
Worlds last saved before Minecraft ane.2 ("pre-anvil") no longer tin exist opened directly
Data pack format has been increased to 8
New video setting "Priority updates"
Removed length limits for scoreboard, score holder and team names
Mob spawners can now override light checks for spawning

JFR profiling

minecraft.ServerTickTime: sampling outcome exposing boilerplate server tick times at one second intervals
minecraft.ChunkGeneration: fourth dimension taken to generate individual chunk stages
minecraft.PacketRead | minecraft.PacketSent: network traffic
minecraft.WorldLoadFinishedEvent: initial globe loading duration
The run will then be stopped either past:
- shutting down the JVM
- jfr stop in-game command
- jcmd CLI tool
Java Flying Recorder is the internal JVM profiling tool bundled with the Java Runtime to analyze performance and runtime characteristics. It's a useful tool for exposing internal JVM performance metrics as well as custom metrics that can be monitored or analyzed using any stock Java profiler or monitoring agents
A summary JSON written report is written both to the log file and in the debug binder accompanied by a .jfr recording ready to be analyzed
A profiling run tin be started using whatsoever of the following alternatives:
- --jfrProfile startup flag when starting a Minecraft server or customer
- jfr beginning in-game command
- Regular Java CLI tools such as jcmd

Loot tables

Changed functions:
- set_contents
- set_loot_table
Added new mandatory field type. This type will exist written into BlockEntityTag.id, to make sure this tag tin can be correctly migrated between versions

Onetime world conversion

Worlds last saved earlier Minecraft 1.2 ("pre-anvil") now require conversion in a previous version of a game to exist able to be opened
Conversion works best in versions 1.half-dozen.4 and before — worlds opened for the first time in later versions will take wrong biome information

Priority update information

This setting determines which chunks sections are updated synchronously during a unmarried frame
The well-nigh conservative option "nearby" corresponds to the state before the update
The new options "past player" and "none" significantly reduce stutters when placing or removing blocks (especially light sources), just can potentially cause rare visually noticeable delays in world updates

Spawner data changes

Spawners now support the custom_spawn_rules NBT in the SpawnData field and the SpawnPotentials list
custom_spawn_rules currently may contain fields block_light_limit and sky_light_limit — both are integer ranges with fields min_inclusive and max_inclusive
To make SpawnPotentials format similar to other weighted lists, construction was changed to {weight: <int>, information: <previous contents without 'Weight', 'Entity' renamed to 'entity'>}
To conform that change, previous contents of SpawnData were moved to SpawnData.entity (making format of that field same as elements of SpawnPotentials.information)

Fixed bugs

Withers will not pursue players in survival mode unless attacked
River through Eroded Badlands biome generates floating rock formations at water surface
Client render distance doesn't suit to server return distance if they are different, causing faulty chunk loading
Desert pyramids generate surreptitious when using amplified or custom terrain
Too long scoreboard objectives and team names are not detected when commands are parsed
Jagged ocean transitions and slower biome generation
The interactions betwixt a biome and another biome and its variants are inconsistent
Giant Spruce Taiga Hills has no difference with Giant Spruce Taiga
Drowned do not spawn in warm ocean biomes
Chat letters written while sleeping are deleted after waking up
Splash water bottles don't damage endermen
Score callbacks with a too long name break callback chain
Rabbits, instead of spawning on snowfall blocks, spawn on snowfall layers
Axolotls exercise non avert danger when pathfinding
Glow Lichen can spawn underwater whilst not in a cave.
FPS drops when looking up in a tall world (4064 blocks)
Oceans generate with stone floors
Pointed dripstone can generate floating at transitions between local water levels
Aquifiers sometimes create air pockets
Hard edges when new caves generate nigh surface
Isolated floating mineshaft platform
Mineshafts oftentimes don't generate in floating island worlds
Dirt can generate below y=0 from mineshafts
Ruined Portals don't generate beneath y=0
Some chunks interrupting with cave systems filled with blocks
Kelp & Seagrass can generate in aquifers
Unnatural shape looking similar a chunk edge but appears to be completely unrelated to clamper borders
Inefficient generation of aquifers, dissonance caves and ore veins
Magma blocks generate everywhere underwater in 21w10a
Weird flat sections of terrain
Horses donkeys, mules, llamas, and trader llamas do non follow players holding nutrient
Apartment roofs in underwater caves
Dripstone, pointed dripstone, and cave magma generate in oceans
Iron Ore generation was not increased in 21w13a
Magma tin can spawn under air in underwater caves
Floating Water can generate in ravines
Dripstone tin can generate in surface lakes
Extended height bulletin goes backside the scrolling bar
Axolotls pathfinding to water tin sometimes autumn in broad holes
Ore blocks from ore veins float in underwater magma ravines
Parity event: enchanting tables do not emit a calorie-free level of 7
Dinnerbone Animals do not wait at nutrient correctly.
Game crashes when trying to access the realms settings

Zachary Boddy is the Minecraft Expert and a News Writer for Windows Central, Android Central, and iMore. They have been gaming and writing for most of their life, and have been freelancing for Windows Central and its sister sites since 2019, with a focus on Xbox and PC gaming. You can find Zachary on Twitter @BoddyZachary.