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Minecraft 1.13 pre-release 10

Minecraft: Java Edition - Update Aquatic Pre-Release

We're now on pre-release 10 and we expect this to be the last pre-release before the full release. That said, unless any major show stopper pops up, we aim to release Update Aquatic for Minecraft: Java Edition on Wednesday, July 18th.


  • New Update Aquatic title screen
  • Three brand new pieces of music by C418
  • You can now tab-complete in command blocks again
  • Fixed bugs!


  • Title screen should now be more optimised
  • Reverted the bark block changes from the first pre-release
  • Various performance optimisations
  • You can now combine 9 ice to create 1 packed ice
  • Fixed a bunch of bugs


  • Lots and lots of bug fixes!
  • Some optimizations!


  • Updated LWJGL
  • Biome names are now sorted alphabetically in the buffet menu
  • Performance improvements
  • Bugs got fixed!


  • Fixed a nasty crash
  • Renamed a lot of internal IDs to be more consitent with the game
  • Squashed bugs!


  • Changed dolphin treasure finding behaviour to be more on parity with Bedrock
  • Improved fonts
  • Some sounds are now more wet
  • Brought out the bug spray!


  • Fixed outstanding issues with the new improved fonts
  • Maps changed slightly. Read more about it by clicking here.
  • Made all waterlogged blocks display the drip animation
  • More bugfixes!


  • Added dead coral fans
  • Changed which blocks show dripping liquids
  • Team names & objective names are now text components, not raw strings
  • More bugfixes!


  • Added a few missing subtitles
  • Improved performance
  • Fixed bugs!


  • Added an "Optimize World" button (singleplayer -> edit world -> optimize world), which upgrades an entire world from older version to the latest version in one go
  • Improved performance
  • Fixed bugs!


  • MC-122134 - Tab-completion in command blocks no longer works
  • MC-122940 - After executing the /reload command, clicking on recipe book recipes does not work
  • MC-124123 - Crash upon loading world: Non [a-z0-9/._-] character in path of location: minecraft:Zombie
  • MC-124972 - Game crashes during the loading world, when creating a superflat world with oceanmonument tag
  • MC-127142 - Failed to create block entity DUMMY (path of location: minecraft:DUMMY)
  • MC-129625 - Sea grass changes to air pockets when upgrading from 18w16a to 18w20a+
  • MC-130463 - Sponges do not absorb bubble columns
  • MC-130521 - Leaves placed by hand disappear if not touching log or bark after a reload


  • MC-35856 - Multiple background songs playing at one time / automatic music overlap (not Jukebox music)
  • MC-102403 - Persistent/unchangeable sounds after (re-)opening a world
  • MC-121628 - Horse armor textures z-fighting.
  • MC-121714 - Unable to save screenshots and world icons if the path contains non-ASCII characters
  • MC-121832 - Z-fighting on skeleton horse texture
  • MC-122864 - Tamed llamas, donkeys, and mules cannot be named with a name tag
  • MC-123007 - Z-fighting on zombie horse texture
  • MC-123366 - Item right click actions don't work whilst looking at a block in adventure mode
  • MC-123811 - Horses (and llamas, etc) show default name as "HorseChest"
  • MC-124364 - Horse skin and armor textures not applied correctly to horse model
  • MC-125363 - Items fail to remain on surface
  • MC-125744 - Entity predicates for advancements fail if "type" not specified
  • MC-127099 - Kelp isn't completely removed when sponge removes the water
  • MC-127320 - Drowned do not recognize tridents as weapons they can pick up
  • MC-127921 - Horses' health bars interfere with the air bubble bar.
  • MC-128241 - Dolphins can sit in boats
  • MC-129262 - Zombie horses don't sink in water like other undead mobs
  • MC-129374 - Crash on 32 bit JVMs: "Unable to bootstrap datafixers" due to stack overflow
  • MC-129500 - Map displays 1 deep water as dry land.
  • MC-129712 - Team Suffix resets after restarting world
  • MC-129895 - Concrete powder's falling sand entities lose NBT data when upgrading from 1.12.2 to snapshots
  • MC-130014 - When updating villagers trade carved pumpkin instead of pumpkins
  • MC-130059 - Bubble column particles (from falling) have missing texture
  • MC-130145 - Text over the hotbar does not reflect item rarity colours
  • MC-130200 - Items in saved creative toolbars upgrade improperly from 1.12.2 to 1.13-pre1
  • MC-130524 - Beds turn invisible when upgrading from 1.11.2 or below
  • MC-130577 - Armor doesn't always line up with Drowned model
  • MC-130722 - Slime blocks diffuse light
  • MC-130779 - Title-Screen Lag High GPU Usage
  • MC-130800 - Normal terracotta disappears from chests when upgrading from 1.12 to 1.13-pre1
  • MC-130858 - Pistons are no longer transparent
  • MC-130936 - Carpets on llamas removed when loading 1.12 map
  • MC-130942 - Errors, warnings and 10 second freeze on loading list of singleplayer worlds
  • MC-130945 - Command tab completion does not work in command blocks with command suggestions off
  • MC-131125 - InhabitedTime set to zero after update from 1.12.2 (Local Difficulty)
  • MC-131155 - Saving structure which has not been saved before logs error "Couldn't load structure"


  • MC-131706 - Water doesn't destroy carpet
  • MC-131633 - Mobs get stuck on carpet
  • MC-131458 - Cobwebs don't appear on maps
  • MC-131419 - Squids, fish, and dolphins don't suffocate on land
  • MC-131416 - Conversion of a 2013 world crashes as of 1.13
  • MC-131400 - Structure names allow trailing dots for folder names
  • MC-131343 - Crash when clicking on a recipe in the recipe book without sufficient ingredients
  • MC-131154 - Resource locations allow empty path pieces
  • MC-130778 - End return portals don't return you to the centre End Island
  • MC-130690 - EntityTag for spawn eggs is not working
  • MC-130667 - Flowing water freezes in frozen biomes.
  • MC-130554 - Waterlogged blocks have a full cube hitbox
  • MC-130486 - Side of water and lava not rendered besides non-full-height blocks
  • MC-130475 - Boats immediately sink when placed on water
  • MC-130374 - vSync turns off in fullscreen mode
  • MC-130169 - Enchanted items with capitals in enchantment ID cause crash (path of location: minecraft:Cookie)
  • MC-129526 - Grass and ferns don't show up on a map
  • MC-128558 - Swamp Hills (mutated_swampland) biomes have wrong colored water (light yellow)
  • MC-128237 - Conduits, kelp, coral (fans), and tall grass have full hitboxes
  • MC-128071 - Desert rabbits were the wrong color, but now they are missing
  • MC-127720 - Baby horses have long necks
  • MC-127326 - Rain splash particles don't appear on the surface of the water
  • MC-127109 - Nether caves under lava oceans don't fill up with lava properly
  • MC-127044 - Waterlogged blocks don't move entities if the water in them is flowing
  • MC-126809 - minecraft:exploration_map loot table function only works on block containers
  • MC-126138 - No rain sound in ocean
  • MC-126038 - Observers getting moved in "on" state rather than "off" state
  • MC-125644 - Dispenser filled with bone meal cannot create sea grass
  • MC-124876 - Villagers requesting tools with no damage provided specifically want Damage:0
  • MC-124325 - Nested /execute commands can only store success/result once
  • MC-124174 - Game crash when give yourself an item with empty name
  • MC-124025 - Terracotta, spawn egg and entity statistics are lost on world upgrade
  • MC-123362 - SuccessCount of command blocks use the "result" return value of a command instead of "success"
  • MC-123011 - Scores on scoreboard objectives created with old stats causes scoreboards to not store changes to scoreboard.dat
  • MC-122498 - Some advancements and recipes are not upgraded when opening world in 17w47+
  • MC-35856 - Multiple background /title songs playing at one time / automatic music overlap (not Jukebox music)
  • MC-258 - Most text boxes / chat / scroll bars revert when the window changes size, fullscreen mode is toggled, or fullscreened game is tabbed into


  • MC-36030 - Music playing despite music / jukebox slider set to OFF
  • MC-121798 - Can only scroll list in superflat preset selection when it is focused
  • MC-126162 - Waterlogged blocks and bubble columns don't absorb explosion damage
  • MC-126244 - Extreme lag when using the /locate command or when generating explorer maps
  • MC-126595 - Blue Wither heads are intangible and invincible on the first tick(s?)
  • MC-128299 - Blocky and fully bright areas appearing underwater
  • MC-128690 - Water does not flow sideways when there’s no block below it
  • MC-130270 - Iron golem spawning inside blocks
  • MC-130530 - Water source block gets destroyed from downwards flowing water
  • MC-131094 - Projectiles ignore collisions for ~1 block after spawned
  • MC-131462 - Coordinate math error causes structure not to generate and possibly other issues
  • MC-131768 - Models’ predicates are inverted
  • MC-131773 - Comparators from command blocks no longer output results properly
  • MC-131805 - Observers pulsing after being moved instantly after triggering
  • MC-131825 - Enchanted books lose enchantments when upgrading
  • MC-131849 - Duplication bug


  • MC-103516 - Spider and chicken jockeys only spawn the additional mob
  • MC-118372 - Faulty netty-4.1.9.Final release causes players to be kicked from the server
  • MC-124545 - Malformed JSON as 'name' value for 'show_entity' hoverEvent causes crash
  • MC-124546 - /datapack disable <pack> only works in the overworld
  • MC-125729 - Moving frosted ice preempts melting even under correct conditions
  • MC-126136 - Inverted tab-suggestions for argument values in entity selectors are suggested even if the typed prefix doesn't include an exclamation mark
  • MC-126144 - Cods suffocate when touching a solid block from below
  • MC-126373 - Density of nether and overworld ore veins significantly lower in 18w versions
  • MC-126906 - Buckets cannot be emptied against blocks with the state waterlogged
  • MC-126915 - Dispenser with empty bucket removes waterlogged blocks instead of drying them out.
  • MC-129527 - Drowned overlay turns dark blue when wearing enchanted armor
  • MC-130270 - Iron golem spawning inside blocks
  • MC-130480 - Input range entry and limits are reversed in error messages
  • MC-130547 - Objective minecraft.used only ticks up when placing a block from a stack of 2 or more items
  • MC-131094 - Projectiles ignore collisions for ~1 block after spawned
  • MC-131599 - Opening player inventory with visible recipe book after using beacon causes crash
  • MC-132002 - Ender dragon respawns when upgrading from 1.12 to 1.13-pre3
  • MC-132064 - Swimming state does not end when teleporting / jumping out of water


  • MC-234 - Digging straight down glitches out the breaking animation (Z-fighting)
  • MC-14502 - Special characters on splash text on title screen rendered wrong
  • MC-41410 - Random text does not work in unicode
  • MC-64537 - Gui zooming out when using some languages (unicode)
  • MC-72943 - Game freeze after closing an "Open to LAN" single player world
  • MC-81876 - Number of characters before line cutoff in chat is not same when unicode mode is enabled and when it is off
  • MC-91727 - loot table "spreading large stacks" will overwrite existing items
  • MC-92255 - Singleplayer freezes instead of kicking a player
  • MC-94325 - Shadow of obfuscated text does not match with displayed character
  • MC-96524 - Language specific letters don't look like they should
  • MC-121798 - Can only scroll list in superflat preset selection when it is focused
  • MC-121861 - Command argument validation does not work for entity id in /summon
  • MC-122110 - BufferBuilder not expanding under specific conditions.
  • MC-122478 - It is possible to create a server in the server list with a blank name and/or IP address
  • MC-122495 - Cancelling backup screen using ESC opens main menu
  • MC-122596 - Command autocomplete overrides command history navigation
  • MC-122597 - "Preparing spawn area %s%%" string is hardcoded/not translatable
  • MC-123078 - Scoreboard ranges don't work correctly at extreme values
  • MC-123087 - Fences, glass panes, iron bars, stairs, and melon/pumpkin stems in structures generate with wrong block state
  • MC-123236 - Wrong error message when using invalid item in /replaceitem
  • MC-123325 - You can no longer use damaged items in advancement icons to display different textures
  • MC-123352 - Interaction error with block and GUI, when shift-clicking them with non-block items
  • MC-123363 - Occasional crash when changing blocks with a special renderer that uses states
  • MC-123432 - Snapshots are leaking tile entity data through to world save
  • MC-124469 - GUI scale size 3 displays as size 2 when Unicode font is forced
  • MC-124966 - Torches in mineshafts/strongholds are not always attached
  • MC-125090 - Cartographer doesn't unlock woodland mansion and ocean monument map trades
  • MC-126244 - Extreme lag when using the /locate command or when generating explorer maps
  • MC-126685 - Bubble columns don't update when placing magma blocks or soul sand above them
  • MC-126708 - Advancement trigger "bred_animals" does not trigger for breeding turtles
  • MC-126769 - Observers detecting updates from redstone on top of them
  • MC-127822 - Unicode on/off bug with another languages and english letters.
  • MC-128387 - Dolphins try to pick up items on land
  • MC-128687 - Picking up lava with an empty bucket would play the water picking up sound.
  • MC-128736 - Dolphin's pectoral (side) fins are flipped over instead of mirrored
  • MC-129318 - The "How Did We Get Here?" advancement does not require Dolphin's Grace
  • MC-130127 - Dolphins generate in large amounts with ocean ruin structures
  • MC-131019 - Setting and changing data of signs creates unnecessary "extra" tags and causes slow downs
  • MC-131159 - Dolphins spawning in frozen/deep frozen oceans!
  • MC-131288 - Shulker Box can't be opened and disappears when mined
  • MC-131783 - Crash on breaking 1.12.2 -> 1.13-pre5 upgraded banner
  • MC-131903 - Banners not dropping as item when broken after unloading
  • MC-132050 - Worlds <= 1.8.9 spam errors on conversion
  • MC-132113 - 1.13-pre4+ crashes caused by invalid gamepad / controller configuration detected by LWJGL 3.1.6 build 14b
  • MC-132242 - Upgrading enderman spawn egg causes chunk to regenerate
  • MC-132252 - Player cannot leave the swimming animation underwater
  • MC-132254 - Using /effect to give players an effect kicks them from the server
  • MC-132259 - Poor TPS in latest pre-release
  • MC-132278 - End Crystal beam is missing texture
  • MC-132281 - Crash while creating a customized superflat world using capital letters
  • MC-132292 - Some sound events are no longer playing the expected sound
  • MC-132311 - Dolphins don't save how long they have been out of water
  • MC-132312 - Using bone meal on anything underwater places sea grass on it
  • MC-132320 - Entities with new IDs disappear when upgrading
  • MC-132335 - Shulkers no longer shoot missiles in 1.13-pre5
  • MC-132375 - Upgrading 1.12.2 world to 1.13-pre5 crashes the game
  • MC-132443 - Some advancements are not upgraded from 1.12.2 (to 1.13-pre5+)
  • MC-132448 - Illager and golem statistics are not upgraded properly
  • MC-132455 - Evoker spawn egg disappears when upgrading from 1.12.2
  • MC-132579 - Inconsistent font


  • MC-37557 - Sometimes a minecart sound plays/subtitle shown when loading a world
  • MC-122596 - Command autocomplete overrides command history navigation
  • MC-122734 - No particles when bed explodes in the nether
  • MC-123087 - Fences, glass panes, iron bars, stairs, and melon/pumpkin stems in structures generate with wrong block state
  • MC-123369 - Trying to recreate world from future version shows no warning and can crash
  • MC-123769 - Some item tooltips that previously had colors don't have colors anymore
  • MC-123836 - Double blocks aren't loaded in structures
  • MC-123850 - Redstone dust doesn't update shape of connecting redstone dust when going up onto transparent blocks
  • MC-124015 - Red Giant Mushrooms generate with 5 blocks having wrong blockstates, thus showing wrong faces
  • MC-124126 - You no longer look at the block you are inside of
  • MC-124915 - /locate and eye of ender find strongholds in invalid places
  • MC-125090 - Cartographer doesn't unlock woodland mansion map trades
  • MC-125462 - Waterlogged blocks does not decrease light level
  • MC-125872 - Superflat preset "The Void" doesn't generate starting platform anymore
  • MC-125992 - Cave outlines generate in ocean ravines
  • MC-126704 - X-ray vision
  • MC-126998 - When their block state changes, waterlogged blocks don't remove water they let through
  • MC-127025 - Waterlogged blocks do not display water drip animation
  • MC-127093 - Water flowing onto waterlogged blocks spreads outward, rather than stopping
  • MC-127114 - Water in glass panes and ladders doesn't appear in maps
  • MC-127115 - Visually fully submerged waterlogged blocks don't appear as water on maps
  • MC-127224 - Waterlogged blocks that are not full blocks trigger auto-jump even if it is disabled.
  • MC-127303 - There are no water sources near the south ceiling of flooded caves and trenches
  • MC-128257 - Bugged swimming animation while the head is not underwater
  • MC-128478 - Distance swum statistic uses old "swimming" (bobbing on top of water) instead of the new swimming
  • MC-129388 - Player suffocating when touching a solid block while swimming
  • MC-129892 - Selector wildcard doesn't work in scoreboard operations
  • MC-130072 - Pufferfish don't play the entity.puffer_fish.sting sound when damaging mobs
  • MC-131352 - Item rarity color / colour overrides first text component's colour in the held tooltip (item switching)
  • MC-131382 - Scoreboard objective name can't be updated
  • MC-132135 - Bad performance of a 1.12.2 world in 1.13
  • MC-132248 - Server crash on launch using Java 9 or newer
  • MC-132269 - Blocks invisible on map
  • MC-132375 - Upgrading 1.12.2 world to 1.13-pre5 crashes the game
  • MC-132631 - Cannot write in the box in the Superflat presets option
  • MC-132632 - Can not climb 1 block height if player is in water 5 or more blocks from water source
  • MC-132654 - F3 + I is missing large amounts of data
  • MC-132706 - Sticky pistons pull blocks that pop off
  • MC-132751 - Two chests spawned inside each other
  • MC-132833 - Opening 1.5.2 world on 1.12.2 works perfectly but bed is transparent.
  • MC-132974 - Converting 1.12 world to 1.13 spams Chunk file at x,y is missing level data, skipping
  • MC-132977 - Esc key results in an older world being converted to a newer version during 'Play' menu sequence
  • MC-133063 - When trying to connect to an unreachable server Minecraft crashes instead of showing error message
  • MC-133136 - Crash when launching the game with LWJGL allocation debugging enabled
  • MC-133139 - The image write callback is never freed, leaking small amounts of memory for each screenshot
  • MC-133140 - The GL debug message callbacks are never freed, causing memory leak warnings


  • MC-133325 - Double chests becoming invisible or separating with redstone
  • MC-133277 - Texts sometimes error if the language is Chinese
  • MC-133233 - Sticky pistons do not update blocks they cannot pull
  • MC-133216 - Water dripping from transparent blocks
  • MC-133214 - Sticky pistons pull glazed teracotta
  • MC-133157 - Sprinting in shallow water using ctrl will change FOV back and forth
  • MC-132835 - The right "tail" of the capital ß (ẞ) seems to be a few pixels too long.
  • MC-132695 - Some bold characters have either extra or lack of pixels
  • MC-132639 - New version of unicode font has some weird characters
  • MC-132635 - Placing blocks with off-hand while main hand empty not possible
  • MC-132603 - Bark recipes are not upgraded
  • MC-132466 - No enum constant bfz - loading and saving 1.12.2 chunks
  • MC-132174 - Tier 4 beacons will not give regeneration effect
  • MC-132123 - Lighting for broken block not updated
  • MC-131327 - Opaque blocks at the top of subchunks (chunk sections) do not increase the world height to the next subchunk
  • MC-128858 - Distance given by /locate is inaccurate
  • MC-124955 - Bottoms of large ferns and tall grass are generating in place of regular ferns and grass in taiga biomes
  • MC-123447 - Skin not visible in spectator mode GUI (since 1.13)
  • MC-123265 - Spectator mode tooltips not showing
  • MC-68565 - Monsters spawn at daytime at y=256 and don't burn
  • MC-60995 - Maps inconsistent over restarts


  • MC-131821 - Cory Scheviak does not appear in credits
  • MC-131822 - Nondescript / confusing error message when attempting to join servers <= 1.13-pre2 using >=1.13-pre3
  • MC-132652 - Username tab completion on non-empty starting strings is offset
  • MC-132657 - Username tab completion appears on the left when invoked without a starting string in the middle of the chat entry line
  • MC-133337 - Crash in org.lwjgl.opengl.GL11.glDrawArrays when opening language settings (caused by Couldn't find glyph for character Ʞ (\ua7b0))
  • MC-133503 - Control settings from 1.12.2 can get completely lost when upgrading to 1.13


  • MC-133653 - Game Crash when creating Superflat world (Void), entering the End, or creating floating islands buffet world
  • MC-133473 - Dead bubble coral fan looks like dead brain coral fan
  • MC-133467 - Mobs Stuck on Flowing Water
  • MC-133421 - The lowest level of flowing water doesn't move mobs
  • MC-133408 - Coral fans and dead coral fans never drop as item
  • MC-128668 - Ocean monuments cut off icebergs
  • MC-127100 - Water and lava influence the flow direction of each other when touching
  • MC-125038 - New world generation doesn't populate edges of old world
  • MC-125007 - World fails to generate decorations on seemingly random quarter chunks
  • MC-122216 - /execute if blocks only returning 1/0 for "result"
  • MC-59729 - /replaceitem doesn't work with chest or hopper minecarts

Get the pre-release

To install the pre-release, open up the Minecraft Launcher and enable snapshots in the "Launch Options" tab.

Pre-releases can corrupt your world, please backup and/or run them in a different folder from your main worlds.

Cross-platform server jar:

Report bugs here:


Adrian Östergård
Adrian Östergård

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