Another snapshot hits the streets, and it's dropping some sick bleats. That's right, Goats are leaping into this snapshot!

New Features in 21w13a

Added the goat!
Added an accessibility option

Goat

Goats spawn in mountains
Goats can scale the sides of mountains with their incredible jumps!
Goats can be tempted and bred using wheat
Goats are another source of milk!

Accessibility

Added an alternative solid black background color for the Mojang Studios loading screen, toggleable with the "Monochrome Logo" accessibility option

Changes in 21w13a

Tweaks to Caves
Tweaks to Ore Distribution
Tweaks to Powdered Snow
Dripstone clusters can now be found rarely in normal caves
Deepslate blobs can now be found between heights 0 and 16
Axolotls and glow squids now spawn in underground water sources
Axolotls will now always chase after and attack squids, glow squids, tropical fish, cod, salmon, pufferfish, drowned, guardians, and elder guardians
Axolotls now have a 2 minute cooldown after hunting non-hostile targets such as fish, squids, etc.
They will prioritise targeting hostile mobs first before hunting.
Bees now see Flowering Azalea (and Flowering Azalea Leaves) as flowers
Additions to Wandering Trader and Mason trades
Additions to chest loot tables

Cave Tweaks

Mineshaft tweak: increased the max length of pillars and chains.
Carver tweaks: made carvers less likely to be too flat to walk through.
Noise cave tweaks:
- Increased likelihood of megacaves (large cheese caves)
- Reduced likelihood of toothpick pillars (tall 1-block thin pillars)
- Other tweaks to make the cheese caves more varied and interesting.

Ore Distribution Tweaks

Slightly more iron
Larger diamond blobs sometimes form

Powdered Snow

Powder snow's durability/hardness was slightly increased
Freeze time has decreased to 7 seconds and hurt frequency has decreased to 2 seconds
Entities on fire now melt powder snow when colliding
Increase vertical movement speed within powder snow
Strays, polar bears, and snow golems are now immune to freezing
Mobs now shake when they are fully frozen
Skeletons converting to strays now only require the 7 seconds it takes for an entity to be fully frozen to begin converting, instead of the 30 seconds it took before
Leather horse armor now protects horses from freeze damage
Mobs that enjoy the heat (Blazes, Magma Cubes, and Striders) take increased freeze damage

Trade & Loot Table Additions

Added the following trades to Mason:
- Will sell 4 Dripstone blocks for 1 emerald
Added the following trades to Wandering Trader:
- Will sell 2 Pointed Dripstones for 1 emerald
- Will sell 2 Rooted Dirt for 1 emerald
- Will sell 2 Moss Blocks for 1 emerald
Moss blocks can be found in Shipwreck chests
Glow Berries can be found in Mineshaft chest minecarts

Technical Changes in 21w13a

Added metric cube of light!
Unused parts of code are no longer removed

Light block

Op-only (/give) air-like waterloggable block
Emits light at level determined by block state
Visible and targetable only when item is held (similar to barrier)
Right click cycles light level

Bugs fixed in 21w13a

MC-3366 End portal appears transparent from below
MC-70738 Killing guardian with lava does not give cooked fish
MC-102269 Polar bears drop raw fish instead of cooked fish when killed with fire or lava
MC-108636 There are a number of unused texture files
MC-123587 Kicked from the game when reaching y levels over 30,000,000
MC-124667 Air can be used in custom recipes, causing a crash
MC-136776 Some NBT tags are not kept when fish or axolotl mobs are caught in water buckets
MC-167853 Observer doesn't detect when a grass block changes to dirt if a tree grows on top
MC-174701 Leash knot sound effect plays when loading singleplayer world
MC-187544 'Cover Me With Diamonds' advancement improperly capitalized
MC-190774 Stonecutter saw spins both ways simultaneously
MC-194183 Some experience points do not go towards Mending repair, even if the Mending gear is not fully repaired
MC-195640 Suspicious stew inedible with full hunger
MC-197073 Turtles laying eggs on red sand produce normal sand particles
MC-199065 Zombies that die while on fire do not drop baked potatoes
MC-199237 Back of ladder is incorrectly mirrored
MC-199239 Vines appear incorrectly mirrored when viewed from behind
MC-199242 Texture planes of crop models appear incorrectly mirrored from behind
MC-201748 Chain model planes are incorrectly mirrored on the rear
MC-201751 Chain section on lanterns is incorrectly mirrored from behind
MC-201753 Sea pickle green top sections do not render correctly from behind
MC-203553 Water bottle doesn't extinguish candles
MC-203605 Lightning rod bottom texture is mapped incorrectly
MC-203617 Can't "Pick Block" cauldrons with liquid or powdered snow inside
MC-203838 Aiming a spyglass with a loaded crossbow in offhand creates weird third person effect
MC-203847 Waterlogged candles can be lit
MC-204133 Candle extinguishing particle appears offset from the candle
MC-204430 Cauldrons filled with water, lava or powder snow cannot be used as a workstation for villagers
MC-205060 Powder snow does not cause underlying grass, mycelium or podzol to appear snowy
MC-205083 Mobs wearing leather boots spin around when walking on powder snow
MC-205106 Mobs that get damaged by powder snow can spawn inside powder snow
MC-205131 Landing on powder snow while wearing leather boots inflicts fall damage on Java, but not on Bedrock
MC-205143 The particles produced when extinguishing a campfire are misplaced
MC-205158 Powder snow inside textures are not correctly mirrored
MC-205169 Mobs don't path find across powder snow blocks when not wandering
MC-205302 Using /setblock to place a structure block defaults to save mode, unlike placing one by hand
MC-205613 Skeletons in powder snow spin when aiming at the player
MC-205885 Endermen holding water, lava or powder snow cauldrons don't drop cauldrons
MC-205914 Placing turtle egg/sea pickle onto turtle egg/sea pickle while sneaking doesn’t place it next to it, although placing candle onto candle does
MC-205918 Experience orb stacks that were used in the mending process lose their experience amount, even if the stack is still larger than one
MC-208075 Copper slabs and stairs are not included in the #minecraft:slabs and #minecraft:stairs tags
MC-208588 Axolotls change color when released from bucket / axolotl entity data isn't stored in the bucket item
MC-208594 Axolotls aren't required for the "Two By Two" advancement
MC-208647 Axolotls don't attack elder guardians
MC-208695 Semi-transparent pixels on axolotl textures
MC-208703 Axolotls don't give regeneration or remove mining fatigue
MC-208745 Explorer maps & filled maps turn blank after entering the nether or end
MC-209371 Can't cut stacks in half in furnace output
MC-212221 Glow item frames are rendered dark when a light source is nearby
MC-212305 Back face of glow lichen is not correctly mirrored from behind
MC-212736 Some world border faces are rendered mirrored, resulting in incorrect corners
MC-213552 Shulker hitbox does not immediately rotate after the shulker visually rotates
MC-213769 Rooted dirt is far from other dirt variants in the Creative inventory
MC-213771 Rooted dirt is in decorations tab
MC-213772 Certain faces of azalea are not culled by other blocks
MC-213777 Azalea and flowering azalea z-fight when placed next to blocks
MC-213789 Water behaves as if moss blocks were air
MC-213815 Grass, ferns, flowers, bushes, saplings and bamboo cannot be placed on top of rooted dirt
MC-213837 Can't pick block big dripleaf stem
MC-213841 Signs, banners, paintings & item frames cannot be placed on moss
MC-213860 Farmland/dirt path don't convert to dirt when moss is placed above
MC-213877 Cannot turn Rooted Dirt into a Dirt Path
MC-213878 Using bone meal on a small dripleaf shows breaking particles
MC-213899 Big Dripleaf can be rotated incorrectly by breaking and replacing it
MC-213907 Skeletons don't have a shaking animation while converting to strays
MC-213958 Azalea bushes connect to walls and fences
MC-214049 Mining rooted dirt is slightly faster than mining other dirt blocks
MC-214073 The azalea's side textures are partially cut off
MC-214097 Cake cannot be placed on top of a moss block
MC-214135 Converted moss blocks do not update redstone
MC-214181 Rooted dirt cannot be picked up by endermen
MC-214374 Redstone doesn't connect vertically on moss blocks
MC-214586 Rooted Dirt has no assigned tool
MC-214589 End gateway exit portals can be set to high coordinates, kicking the player
MC-214639 Rooted dirt is not randomly rotated
MC-214693 Tripwire texture is not mirrored correctly from behind
MC-214694 Tripwire which is part of a tripwire hook is not mirrored correctly from behind
MC-214695 Big dripleaf texture mirrored incorrectly from underneath
MC-214696 Small dripleaf texture mirrored incorrectly from underneath
MC-214698 Azalea top texture is mirrored incorrectly
MC-214818 Waterlogged pointed stalagmites don't drop when their support block is broken
MC-214858 Powered big dripleaf play tilting sounds when blocks are changed nearby
MC-214879 Selecting nothing and pressing Ctrl+C clears clipboard
MC-214901 Rain passes through moss blocks
MC-214965 Maximum building height is 319, but warning message says 320
MC-216820 Cobbled Deepslate Slab uses the stone sounds instead of the deepslate sounds
MC-217749 Small Dripleaf can't be placed on Rooted Dirt while waterlogged
MC-218888 Shift Clicking items into inventory prevents the relevant advancement from triggering
MC-219054 Can type text into anvil text field without putting an item in it, preventing you from closing the UI with E
MC-219103 The eyes of some entities can be seen through powder snow/lava
MC-219203 Mineshaft support legs can generate in lava
MC-219240 Inconsistency: cobbled deepslate does not take longer to mine than deepslate
MC-219635 There is no sound when defrosting from fire/lava (vanilla parity)
MC-219740 Spyglass overlay broken while in water with fast graphics
MC-219850 There is no sound or subtitle for applying/removing/scraping wax or oxidation
MC-219868 Opening a UI darkens the background less than it used to
MC-219906 Minecraft crashes when spectating an entity submerged in water
MC-219920 Amethyst Blocks can no longer be gained by mining them
MC-219933 Shulker heads do not flash red when taking damage / when killed
MC-219937 Parity issue: Clouds are at y=192
MC-219973 Hanging Roots takes about a second to be mined
MC-219974 Big Dripleaf takes about a second to be mined
MC-220068 Experience orbs are no longer affected by the fog from powder snow/lava
MC-220069 Wither/creeper armor is no longer affected by the fog from powder snow/lava
MC-220070 Lightning is not affected by the fog from powder snow/lava
MC-220157 String is not affected by light levels
MC-220174 With graphics set to Fabulous!, blocks such as honey, slime and stained glass appear lit up in third person mode
MC-220269 Shader texture coordinate wrapping mode causes screen effects like glowing to wrap where they shouldn't
MC-220339 Beacon beam is not affected by the fog from powder snow/lava
MC-221146 Water fog still very subtle making water appear too clear in the distance

Minecraft Snapshot 21w13a