Minecraft Wiki

The Minecraft Wiki is no longer considered as official by Microsoft and therefore several changes are required to be made, including to the wiki's logo. Please read this announcement for more information.


Minecraft Wiki
Minecraft Wiki
Minecraft 18w19a
Java Edition 18w19a.png

Java Edition



Release date

May 8, 2018

Snapshot for



Client (.json)

Protocol version


Data version


18w19a[1] is the thirty-third snapshot released for Java Edition 1.13, which added the Dolphin's Grace effect and changed some IDs, mainly to biomes.



Status effects


  • Separated some of the logic for blocks and fluids.[2]
    • Current fluids:
      • minecraft:empty
      • minecraft:flowing_water
      • minecraft:water
      • minecraft:flowing_lava
      • minecraft:lava
    • The fluid at a location is currently dependent on the block at the location; currently there still are water and lava blocks.
  • Added two new fluid tags: minecraft:lava and minecraft:water.
  • This system is mostly internal; it cannot be directly interacted with yet

World generation[]

Buffet worlds
  • New generation type: "Caves".
    • Creates Nether-like generation.



Block IDs
  • Changed names and IDs of several blocks:
Old Name New Name
Sea Grass Seagrass
Tall Sea Grass Tall Seagrass
Old ID New ID
sea_grass seagrass
tall_sea_grass tall_seagrass


Turtle eggs
  • Changed turtle egg inventory item texture.
Spawn eggs
  • Phantom spawn eggs now look more like the mob's updated texture.
Heart of the sea
  • Now generates in buried treasure chests (as stacks of 1).
Item IDs
  • Changed names of several items:
Old Name New Name
Clownfish Tropical Fish
Puffer Fish Bucket Pufferfish Bucket


  • Now flap their wings smoother and faster.
  • Will now drop experience.
  • If dolphins start drowning, they will now swim to the surface.
Polar bears
  • Can now spawn on top of ice.
Old Name New Name
Puffer Fish Pufferfish
Old ID New ID
puffer_fish pufferfish

World generation[]

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

Command format[]

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


  • Improved the upgrade paths from old versions.
  • Updated the credits list.
Experience orbs
  • Will now float up in water.
Debug screen
  • The F3 menu now shows the biome ID, rather than name.
  • Changed the names of several biomes:


99 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
  • MC-118072 – Redwood Taiga Hills M Biome misnamed
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-122630/help no longer prefixes "/" to commands
  • MC-122632/help entries for subcommands do not print main command prefix
  • 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-124894 – Chests and dispenser don't spawn in structures on superflat worlds
  • 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-125803NoGravity 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-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-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-126734 – A tree inside which a village house generated generated without its trunk, possibly missing some leaves
  • 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-126950 – Riding floating boats underwater
  • MC-127069 – huge phantom crash
  • MC-127166 – Parrots don't imitate dolphins, phantoms and drowned
  • MC-127253F3 + 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-127337F3 + 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-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.
From the previous development version
  • MC-128666 – Flowing water above magma blocks turns into bubble columns
  • MC-128674 – Buffet end island puts you in the void
  • 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[1]
  • MC-127274F3 + C to copy coordinates works even when reduced debug info is enabled[1]


Video made by slicedlime:


  • Unlike most of the first-of-the-week snapshots, this was released on a Tuesday instead of Wednesday.