Java Edition 18w19a

18w19a
Edition	computer
Type	Snapshot
Release date	May 8, 2018
Snapshot for	1.13
Downloads	Client Server

18w19a is the thirty-third snapshot released for 1.13.

Additions

General

• New Buffet generation type: "Caves".
  • Creates Nether generation.

Gameplay

• New effect: "Dolphin's Grace".
  • Acquired by swimming near dolphins.
  • Makes the player swim faster.

Changes

General

• Improved the upgrade paths from old versions.
• Updated the credits list.
• Experience orbs will now float up in water.
• The "How Did We Get Here?" advancement now includes the Conduit Power status effect.
• The F3 menu now shows the biome ID, rather than name.
• Changed the names of several biomes:

Name ID	Old name	New name
minecraft:extreme_hills	Extreme Hills	Mountains
minecraft:swampland	Swampland	Swamp
minecraft:ice_flats	Ice Plains	Snowy Tundra
minecraft:ice_mountains	Ice Mountains	Snowy Mountains
minecraft:mushroom_island	Mushroom Island	Mushroom Fields
minecraft:mushroom_island_shore	Mushroom Island Shore	Mushroom Field Shore
minecraft:forest_hills	Forest Hills	Wooded Hills
minecraft:smaller_extreme_hills	Extreme Hills Edge	Mountain Edge
minecraft:stone_beach	Stone Beach	Stone Shore
minecraft:cold_beach	Cold Beach	Snowy Beach
minecraft:roofed_forest	Roofed Forest	Dark Forest
minecraft:taiga_cold	Cold Taiga	Snowy Taiga
minecraft:taiga_cold_hills	Cold Taiga Hills	Snowy Taiga Hills
minecraft:redwood_taiga	Mega Taiga	Giant Tree Taiga
minecraft:redwood_taiga_hills	Mega Taiga Hills	Giant Tree Taiga Hills
minecraft:extreme_hills_with_trees	Extreme Hills+	Wooded Mountains
minecraft:mesa	Mesa	Badlands
minecraft:mesa_rock	Mesa Forest Plateau	Wooded Badlands Plateau
minecraft:mesa_clear_rock	Mesa Plateau	Badlands Plateau
minecraft:sky_island_low	The End - Floating island	Small End Islands
minecraft:sky_island_medium	The End - Medium island	End Midlands
minecraft:sky_island_high	The End - High island	End Highlands
minecraft:sky_island_barren	The End - Barren island	End Barrens
minecraft:warm_deep_ocean	Warm Deep Ocean	Deep Warm Ocean
minecraft:lukewarm_deep_ocean	Lukewarm Deep Ocean	Deep Lukewarm Ocean
minecraft:cold_deep_ocean	Cold Deep Ocean	Deep Cold Ocean
minecraft:frozen_deep_ocean	Frozen Deep Ocean	Deep Frozen Ocean
minecraft:mutated_desert	Mutated Desert	Desert Lakes
minecraft:mutated_extreme_hills	Mutated Extreme Hills	Gravelly Mountains
minecraft:mutated_taiga	Mutated Taiga	Taiga Mountains
minecraft:mutated_swampland	Mutated Swampland	Swamp Hills
minecraft:mutated_ice_flats	Ice Plains Spikes	Ice Spikes
minecraft:mutated_jungle	Mutated Jungle	Modified Jungle
minecraft:mutated_jungle_edge	Mutated Jungle Edge	Modified Jungle Edge
minecraft:mutated_birch_forest	Mutated Birch Forest	Tall Birch Forest
minecraft:mutated_birch_forest_hills	Mutated Birch Forest Hills	Tall Birch Hills
minecraft:mutated_roofed_forest	Mutated Roofed Forest	Dark Forest Hills
minecraft:mutated_taiga_cold	Mutated Cold Taiga	Snowy Taiga Mountains
minecraft:mutated_redwood_taiga	Mega Spruce Taiga	Giant Spruce Taiga
minecraft:mutated_redwood_taiga_hills	Mutated Redwood Taiga Hills	Giant Spruce Taiga Hills
minecraft:mutated_extreme_hills_with_trees	Mutated Extreme Hills+	Gravelly Mountains+
minecraft:mutated_savanna	Mutated Savanna	Shattered Savanna
minecraft:mutated_savanna_rock	Mutated Savanna Plateau	Shattered Savanna Plateau
minecraft:mutated_mesa	Mesa (Bryce)	Eroded Badlands
minecraft:mutated_mesa_rock	Mutated Mesa Forest Plateau	Modified Wooded Badlands Plateau
minecraft:mutated_mesa_clear_rock	Mutated Mesa Plateau	Modified Badlands Plateau

Items

• Changed turtle egg inventory item texture.
• Phantom spawn eggs now look more like the mob's updated texture.
• Heart of the sea now generate in buried treasure chests (as stacks of 1).
• Changed names of several items:

Old Name	New Name
Clownfish	Tropical Fish
Puffer Fish Bucket	Pufferfish Bucket

Blocks

• Changed names and IDs of several blocks:

Old Name	New Name	Old ID	New ID
Sea Grass	Seagrass	minecraft:sea_grass	minecraft:seagrass
Tall Sea Grass	Tall Seagrass	minecraft:tall_sea_grass	minecraft:tall_seagrass

Sounds

• New sounds for conduit and beacon.

Commands

• The output of the /seed command can now be copied.

Mobs

• All undead mobs except for zombie horses now sink.
  • It is unsure if the Wither boss can sink because it cannot be seen sinking due to the fact that it will instantly start "flying" or go up once summoned
• Skeleton horses are now rideable underwater.
• Phantoms now flap their wings smoother and faster.
  • However, in some games, phantoms do not flap their wings at all regardless of the game being updated to 18w19a
• Phantoms will now drop experience.
• Parrots will now imitate phantoms and drowneds.
• If dolphins start drowning, they will now swim to the surface.
• Changed the name and ID of pufferfish (mob):

Old Name	New Name	Old ID	New ID
Puffer Fish	Pufferfish	minecraft:puffer_fish	minecraft:pufferfish

World generation

• Due to changes in world generation, worlds from previous snapshots will no longer work.
• Seagrass now generates in underwater caves.

Video

Video made by slicedlime: 18w19a/Update Video

Fixes

102 issues fixed

From released versions before 1.13

• MC-7908 – Spawning underwater / In the middle of an (lava) ocean
• MC-86016 – Some Mojang staff not mentioned in credits.txt

From the 1.13 development versions

• MC-121285 – Crash on start when resolution is changed in profile
• MC-121636 – Server commands available in singleplayer with weird/bad effects
• MC-121661 – Typing /help + unavailable command returns "unexpected error" message
• MC-121799 – Cannot summon lightning bolt
• MC-121999 – Incorrect /help behavior for non-ops
• MC-122557 – Setting the size parameter for the dust particle to 0 or very close to it crashes the game
• MC-122596 – Command autocomplete overrides command history navigation
• MC-122628 – /help no longer has pages
• MC-122630 – /help no longer prefixes "/" to commands
• MC-123053 – Game crashes when using an item with a tag in the CanDestroy or CanPlaceOn NBT tag
• MC-123606 – Server crash: Ticking entity 'java.lang.ClassCastException: ass cannot be cast to aui'
• MC-123778 – Team color doesn't work in playerlist and sidebar before reconnecting
• MC-123813 – Team colors no longer show in json results
• MC-123835 – Colored sidebar display slots are not visible
• MC-123852 – Glowing effect doesn't change depending on team color
• MC-123856 – Clicking [Intentional Game Design] on death screen doesn't open a link to MCPE-28723
• MC-124091 – Team color doesn't affect name above head
• MC-124092 – Some team options don't work
• MC-124098 – jeb_ sheep don't change color
• MC-124102 – Book signing shows the author name as string representation of the textcomponent
• MC-124147 – Zombie horses are invisible and replaced with regular zombies on reload
• MC-124237 – Command syntax help doesn't clamp to the right chat line border
• MC-124560 – Server says "type help or ?" but ? is not a valid command anymore
• MC-124633 – Feedback text for "/team option seeFriendlyInvisibles false" when seeFriendlyInvisibles is already disabled is wrong
• MC-124720 – Cannot start server with GUI
• MC-124750 – /particle acting strangely across dimensions
• MC-124889 – You cannot shift click smeltable items into a furnace
• MC-124895 – Trees generate side by side
• MC-124898 – Minerals tab in furnace recipe book displays apple item
• MC-124949 – Tree generating in village house and as part of field
• MC-124956 – Furnace recipe book availability toggle has wrong tooltip ("Showing craftable")
• MC-125060 – Furnace recipe book availability toggle has crafting table icon
• MC-125107 – Mineshafts don't generate support blocks when a block is above it
• MC-125115 – Command suggestions don't order numbers from least to greatest
• MC-125130 – Selector auto-completion tooltips mixed up
• MC-125174 – Ore pockets do not generate in superflat worlds
• MC-125232 – Phantoms attack players in peaceful mode
• MC-125258 – Preparing spawn area spams 0%
• MC-125283 – Jungle Biomes are extremely cluttered
• MC-125381 – Effects from the turtle master potion don't show amplifier
• MC-125442 – Extreme Lag in Jungle Biome
• MC-125466 – Fishing drops don't come towards player
• MC-125550 – Experience orbs don't float up in water
• MC-125607 – Going inside of bubble columns in spectator mode plays bubble column sound
• MC-125675 – Two high sea grass placed on the ocean floor can replace ocean monument parts
• MC-125803 – NoGravity no longers works on items
• MC-125872 – Superflat preset "the void" doesn't generate starting platform anymore
• MC-125915 – Zombies can destroy turtle eggs through a full block and a half above the egg
• MC-125946 – Phantoms can spawn inside/colliding with blocks
• MC-125997 – Deep Frozen Ocean isn't frozen
• MC-126085 – Pufferfish attack invisible players and creative/spectator players
• MC-126086 – Salmon and tropical fish hitbox on land is wrongly positioned
• MC-126139 – The fins of dying cod and some tropical fish show z-fighting
• MC-126144 – Cods suffocate when touching a solid block from below
• MC-126178 – Can use the water (with fish) bucket to destroy kelp, sea grass, coral and coral fan
• MC-126190 – Salmon mobs often get stuck
• MC-126198 – Only players are poisoned by pufferfish
• MC-126218 – Held turtle eggs are too low in first person
• MC-126261 – Turtle Egg Placement
• MC-126362 – Shift-clicking fuel into non-empty furnaces only moves fuel client-side
• MC-126380 – Getting an uncarved pumpkin gives recipe for jack o' lantern
• MC-126656 – Bubble columns made by Soul Sand only appear every other block
• MC-126762 – Red screen when player attack invalid tropical fish variant
• MC-126800 – The tropical fish item is named "clownfish".
• MC-126815 – Banner and treasure markers on maps show incorrect icons in multiplayer
• MC-126859 – Polar bears and rabbits not spawning in Ice Plains
• MC-126883 – Shulker(box) becomes dark purple when upgrading from 1.12.2
• MC-126950 – Riding floating boats underwater
• MC-127069 – huge phantom crash
• MC-127166 – Parrots don't imitate dolphins, phantoms and drowneds
• MC-127253 – F3 + Q list isn't sorted alphabetically anymore
• MC-127291 – Zombies drowning always drop armor items instead of using random chance
• MC-127295 – Zombies can gain tridents or fishing rods when they drown
• MC-127337 – F3 + C (copy coordinates) does not copy dimension
• MC-127388 – Pufferfish appear with their most inflated model after world load
• MC-127516 – Duplication and deletion of ingredients, inventory desync and game freezing caused by faulty handling of firework star recipe
• MC-127593 – Waterlogged blocks such as fence sign ladder etc, will not allow bubble columns to spawn next to them
• MC-127924 – Slow falling is considered a negative effect
• MC-127969 – Sea grass doesn't generate correctly above stairs
• MC-127998 – You cannot place sea pickles on top of non solid blocks
• MC-127999 – Glitching in sea pickles when standing on them while placing the fourth one in the block
• MC-128039 – New Phantom skins do not match spawning egg colors
• MC-128242 – Leaving water while swimming causes player's arm to render out of screen
• MC-128243 – Dolphins do not try to get into the water
• MC-128264 – Mobs can spawn on regular ice
• MC-128285 – Dolphins summoned with NoAI take damage and die
• MC-128336 – Kelp spawns on trapdoors, stairs, slabs and chests on sunken ships
• MC-128463 – The "How Did We Get Here" advancement does not require Conduit Power
• MC-128557 – Drowning dolphins don't swim to the surface.
• MC-128666 – Flowing water above magma blocks turns into bubble columns
• MC-128674 – Buffet end island puts you in the void
• MC-128681 – Dolphins don't drop experience
• MC-128712 – Phantoms don't drop experience when killed by player
• MC-128733 – The ice block tag is missing frosted_ice
• MC-128766 – Blue ice doesn't mine fast using pickaxe
• MC-128779 – "Debug Mode" comes before "Buffet" in the world creation menu
• MC-128857 – Sea pickles change hitbox when increasing count, but turtle eggs don't
• MC-129143 – The F3 menu shows the translated biome name, rather than ID.

Private issues

• MC-122684 – Connected LAN players are able to kick/ban the server host
• MC-127274 – F3 + C to copy coordinates works even when reduced debug info is enabled