Minecraft: Java Edition 1.18 RC 1

Technical Changes

  • Size limit for server resource packs has been increased from 100 MB to 250 MB
  • If there is any bedrock at height 0 in a chunk, new world generation will happen under any non-air block at height 0 in that chunk
  • Minecraft now uses Java version 17. If you are using a default setup the Launcher will download and install the correct version. If you are using a custom Java setup or a third-party launcher, you will need to ensure that your Java installation is version 17 or above.
  • Starting server.jar with an empty bundlerMainClass will now just validate and extract files, then exit

Bug Fixes

  • MC-242708 - Moving through blocks in spectator mode causes a memory leak
  • MC-32813 - Floating water / lava above caves / cave carver doesn’t update water
  • MC-206303 - Minecarts have old textures on the bottom
  • MC-217038 - Large dripstone structures can be generated outside the caves
  • MC-217056 - Some high-speed particles lag/freeze the game
  • MC-220061 - Painting back texture is mirrored
  • MC-223917 - Goats on fire do not attempt to pathfind towards water
  • MC-226689 - Albert Pastore’s name is grey and improperly indented in the credits
  • MC-227163 - Credits say ‘‘IT Manager’’ instead of ‘‘IT Managers’’
  • MC-227204 - “Explore, dream, discover” quote no longer appears after new credits
  • MC-227206 - Random names in the new credits use curly quotes/apostrophes
  • MC-227231 - Steven Silvester’s name is misspelt in the credits
  • MC-227239 - In the credits, Elizabeth Batson’s company name is improperly capitalized
  • MC-227329 - The usage and punctuation of “Inc” is still inconsistent in the credits
  • MC-231782 - Missing “(” in Frank Criscione credit
  • MC-236756 - Biome-exclusive mob spawn rates are reduced
  • MC-236858 - Seeds that spawn you in the middle of the ocean cause lag
  • MC-237608 - Server address shown when connection fails during server startup
  • MC-238049 - Passive mobs (cows, pigs, sheep, chickens) sometimes do not spawn
  • MC-238076 - UpgradeData in chunk is not migrated to new world height
  • MC-238375 - Crash and/or data corruption upon attempting to save a world with a world border center over 30 million blocks
  • MC-238587 - Sprinting while flying into a block causes the screen to rapidly zoom in and out
  • MC-239397 - Lava pockets generate in icebergs
  • MC-239423 - Kumi Tanioka isn’t under “Music composed by” in the credits
  • MC-239856 - Upgrading old worlds causes vines to have the wrong block state
  • MC-239857 - Fences, iron bars, and glass panes often use an incorrect block state after conversion
  • MC-239884 - Water from old chunks don’t properly propagate into new chunks
  • MC-239899 - Connected redstone does not properly upgrade from older versions
  • MC-240030 - Holes in worlds created in Alpha and Infdev below y=0 after conversion
  • MC-240494 - Duplicated mineshafts with new cave generation
  • MC-240507 - Mob Spawning in structures fails in pre-1.18 generated monuments/swamp huts/outposts
  • MC-240570 - Biomes in old chunks are not copied to new caves below Y=0 when chunks are extended
  • MC-240610 - “Allow Server Listings” option doesn’t save its last setting
  • MC-240783 - Powder snow does not reduce or negate fall damage
  • MC-241111 - Some Mojang employees are not mentioned in the credits
  • MC-241194 - Crash: java.lang.NullPointerException: Cannot invoke “ddm.a(cao, cps, java.util.Random, gh)” because the return value of “java.util.function.Supplier.get()” is null
  • MC-241199 - Double chests have incorrect block states after upgrading old worlds
  • MC-241208 - Powered buttons, pressure plates, and tripwire hooks remain powered forever after upgrading old worlds
  • MC-241234 - Fossils get cut off at chunk borders
  • MC-241413 - Floating water generates around ravines
  • MC-138118 - Parrot wing texture is reversed on the bottom
  • MC-148422 - Stripped dark oak log side texture is too bright
  • MC-150567 - Dark oak log top texture bark ring not updated
  • MC-162038 - Pillagers have no hood texture
  • MC-162803 - Lily Pad mirrors texture when placed
  • MC-170557 - Spruce door top/bottom has the incorrect texture
  • MC-176309 - Illusioner has a few misplaced pixels left in their texture
  • MC-176824 - Red glass and outline of blue glass are slightly more opaque.
  • MC-176833 - Anvil GUI hammer uses an outdated iron pallet
  • MC-177664 - Sound system warning messages are spamming the system log
  • MC-180398 - Too many sounds causes client to stall, limit can be easily reached with rabbits
  • MC-194822 - Glass pane top texture has not changed with the Texture Update
  • MC-194950 - Cactus in potted cactus is vertically squished
  • MC-198007 - Villages replace ice with path blocks instead of wood
  • MC-199662 - Extra pixels in cocoa pod textures as of Texture Update
  • MC-200046 - Cartography table planks texture is incorrect/slightly outdated
  • MC-200137 - Lectern base plate texture still uses the old planks texture
  • MC-200956 - Beetroot seeds texture is not vertically centered
  • MC-200957 - Melon seeds texture is not vertically centered
  • MC-202910 - Inconsistent highlight color on armor
  • MC-204901 - Side texture for dirt paths hasn’t been updated with the texture update
  • MC-221172 - Warped and Crimson Stems use different top texture from Bedrock Edition
  • MC-222154 - Cave vines can generate hanging on pointed dripstone
  • MC-222763 - Armor stands use the old smooth stone slab texture
  • MC-225553 - Oak and iron doors have a line in their textures
  • MC-226711 - Carrot crop texture has an incorrect pixel
  • MC-227258 - Flowering Azalea Leaves are in both #minecraft:mineable/hoe and #minecraft:mineable/axe tags, while regular Azalea Leaves (and all other leaves) are only in #minecraft:mineable/hoe
  • MC-228900 - Cave vines can generate floating (Recurrence of MC-218817)
  • MC-229977 - Breaking blocks with pistons on the east/west direction causes significant lag
  • MC-231272 - Cave vines can sometimes generate hanging on cobwebs
  • MC-231818 - You can no longer use the up or down arrow to navigate between servers in the multiplayer menu
  • MC-233883 - The hide and show messages buttons in the social interactions menu display their hover text regardless of the position of the cursor
  • MC-234039 - The back of wild axolotls are off-centered
  • MC-235567 - Clusters of dripstone (stalagmites) tend to generate abnormally frequent with thickness “tip” on tall caves
  • MC-236723 - The Floating Islands preset does not seem to be generating correctly
  • MC-237500 - Azalea trees can generate on top of huge mushrooms, trees & bamboo
  • MC-238360 - Rooted dirt cannot replace terracotta
  • MC-238529 - Azalea trees can fail to generate
  • MC-238892 - Rooted dirt doesn’t replace red sand
  • MC-239128 - Sweet berry bushes generate extremely rare in comparison with 1.17.1
  • MC-239237 - Azalea trees can be generated on icebergs
  • MC-239489 - Melons generate rarely in jungle biomes
  • MC-239847 - Chunk blending occasionally produces sharp chunk border edges
  • MC-241256 - Some feature configs still expect a configured feature instead of a placed feature
  • MC-241278 - Azalea trees are no longer generating
  • MC-241539 - Stone generates in the side of hoodoos
  • MC-241566 - Mossy cobblestone boulders generate in a grid pattern in old-growth spruce taigas
  • MC-241588 - Cave vines can sometimes generate hanging on water
  • MC-241672 - Mobs don’t panic when burning if standing on blocks placed above water
  • MC-241728 - Converting world to 1.18 pre-release 2 generates new caves in too many places
  • MC-241747 - Inconsistent Colors in grindstone gui
  • MC-241784 - Some sliders in options menu do not work properly
  • MC-241800 - Cannot change numbers for gamerules on world creation
  • MC-241847 - Floating stone platform doesn’t generate in void superflat world preset
  • MC-241933 - Spore blossoms, cave vines, and pointed dripstones generate indented into the cave surface
  • MC-241774 - Crash when going nether portals or creating a single biome world with nether biomes // java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0
  • MC-241775 - Crash when going through end portals or creating a single biome world with end biomes // java.lang.NegativeArraySizeException: -5
  • MC-241778 - Game crashes or freeze when loading and upgrading the 1.17.1 version of the Superflat world // java.util.concurrent.CompletionException: z: Biome decoration
  • MC-109260 - Full-width punctuation characters are rendered incorrectly
  • MC-185263 - Non full chunks in cache memory “semi-leak”
  • MC-223840 - Lava blocks from “Lava Aquifers” don’t get updated when a cave cuts through underneath them
  • MC-231818 - You can no longer use the up or down arrow to navigate between servers in the multiplayer menu
  • MC-236740 - Server-side lag spike sometimes occurs when attempting to locate a buried treasure or opening/breaking a chest containing a map
  • MC-236764 - Lighting lags behind world generation
  • MC-239397 - Lava pockets generate in icebergs
  • MC-239610 - Severe world corruption due to 1.18 snapshots failing to deserialize chunks that 1.17 loads fine
  • MC-239682 - Out of memory crash: World generation exhausts Java heap space
  • MC-239950 - Feature placement doesn’t check for biomes, causing unnecessary lag
  • MC-240229 - Rain and snow fall on the same blocks in a certain height range
  • MC-240483 - Foxes that spawn in grove biomes aren’t the snowy variant
  • MC-240589 - Game froze for several minutes and then crashed while flying around and loading chunks
  • MC-241245 - Generated Deepslate overwrites ore veins (mainly Iron ore veins)
  • MC-241255 - Gigantic Performance Drop after a couple of minutes
  • MC-241352 - Directory structure is not consistent between server and client

Get the Release Candidate

Release candidates are available for Minecraft: Java Edition. To install the release candidate, open up the Minecraft Launcher and enable snapshots in the "Installations" tab.

Release candidates can corrupt your world, so please make a backup and/or run them in a different folder from your main worlds.

Cross-platform server jar:

Report bugs here:

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