Java Edition 1.13-pre3

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 "field": "[https://piston-data.mojang.com/v1/objects/94f2e86f94d7d80c19ec1d3d637b1ef2d862be9e/client.jar Client] ([https://piston-meta.mojang.com/v1/packages/06c31253996b4de3188705e3d6c33577d1f9a305/1.13-pre3.json .json])<br />[https://piston-data.mojang.com/v1/objects/5406f31cb5274ae48938851de697b32976ecb499/server.jar Server]",
 "label": "(link to Tutorial:Installing a version#Manual version installation article, displayed as Downloads)"
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 "field": "<span class=\"plainlinks\">[https://en.wikipedia.org/wiki/Java_version_history#Java_SE_8_.28LTS.29 Java SE 8]</span>",
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 "footer": "<table style=\"margin: auto; word-break: break-word;\">\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\" >[[Java Edition 1.12.2|<span style=\"margin-right:-0.35em\">◄</span>◄  1.12.2]]</td>\n<td style=\"padding: 0.4em\">'''[[Java Edition 1.13|1.13]]'''</td>\n<td style=\"padding: 0.4em\" >[[Java Edition 1.13.1| 1.13.1 <span style=\"margin-right:-0.35em\">►</span>►]]</td>\n</tr>\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\">\n[[Java Edition 1.13-pre2|◄  1.13-pre2]]\n</td>\n<td style=\"padding: 0.4em\">''' 1.13-pre3'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition 1.13-pre4| 1.13-pre4 ►]]\n</td>\n</tr>\n</table>"
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1.13-pre3 is the third pre-release for Java Edition 1.13, released on June 21, 2018.^[1]

• Major memory usage optimizations.
• The resource pack folder textures/blocks got renamed to textures/block.
• The resource pack folder textures/items got renamed to textures/item.
• Blockstate files.
  • "normal" for blocks without block states changed to an empty string ("").
  • Item frames now have "map=false" instead of "normal" and "map=true" instead of "map".
  • Model references no longer start at the models/block/ folder, but instead at models/.
• The minecraft:overworld Superflat preset has been changed.
• (Undocumented) Bubble pop particle and sound effects have been removed.
• It is now possible to assign models to the End portal and End gateway blocks, though these only change the particles used and will not cause that model's geometry to render.

64 issues fixed

From released versions before 1.13

• 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-17851 – Blocks requiring any support block (carpets, signs) placed on piston head break when sticky piston retracts.
• MC-31038 – Double-tall plants do not cause updates when broken.
• MC-35856 – Multiple background /title songs playing at one time / automatic music overlap (not Jukebox music).
• MC-48089 – When destroyed, end portal giving "missing texture" particles.
• MC-87587 – Server kicks client when executing: /title @a title [] or /tellraw @a [].

From the 1.13 development versions

• MC-121721 – /spreadplayers for one entity gives huge number as result for average distance.
• MC-121748 – /data merge command feedback when nothing was changed is not meaningful.
• MC-121797 – Cursor remains in text fields when clicking on some buttons or scroll lists.
• MC-122282 – V-sync automatically turned off each time the game starts.
• MC-122351 – Crash when exiting a world: java.lang.ArrayIndexOutOfBoundsException: -1.
• MC-122498 – Some advancements and recipes are not upgraded when opening world in 17w47+.
• MC-122538 – Iron Golems no longer spawn.
• MC-123011 – Scores on scoreboard objectives created with old stats causes scoreboards to not store changes to scoreboard.dat.
• MC-123362 – SuccessCount of command blocks use the "result" return value of a command instead of "success".
• MC-124025 – Terracotta, spawn egg and entity statistics are lost on world upgrade.
• MC-124174 – Game crash when give yourself an item with empty name.
• MC-124325 – Nested /execute commands can only store success/result once.
• MC-124701 – "Unknown criteria" (argument.criteria.invalid) is not translated.
• MC-124876 – Villagers requesting tools with no damage provided specifically want Damage:0.
• MC-125644 – Dispenser filled with bone meal cannot create sea grass.
• MC-126030 – Horse saddle texture uses chest texture.
• MC-126038 – Observers getting moved in "on" state rather than "off" state.
• MC-126133 – Undercover ravines sometimes generate cut off at chunk borders.
• MC-126138 – No rain sound in ocean.
• MC-126388 – Horse reigns float when not riding horse.
• MC-126809 – minecraft:exploration_map loot table function only works on block containers.
• MC-126976 – Water adjacent farmland and grass path graphical errors.
• MC-127038 – Sea plants generate directly under or cut off by ocean ruins.
• MC-127044 – Waterlogged blocks don't move entities if the water in them is flowing.
• MC-127109 – Nether caves under lava oceans don't fill up with lava properly.
• MC-127230 – Water in waterlogged blocks can be picked up only by clicking on the waterlogged block itself.
• MC-127326 – Rain splash particles don't appear on the surface of the water.
• MC-127611 – The archived icons are created in the wrong position.
• MC-127720 – Baby horses have long necks.
• MC-128071 – Desert rabbits were the wrong color, but now they are missing.
• MC-128154 – Some waterlogged blocks have rain going through them.
• MC-128237 – Conduits, kelp, coral (fans), and tall grass have full hitboxes.
• MC-128558 – Swamp Hills (mutated_swampland) biomes have wrong colored water (light yellow).
• MC-128852 – Floating lava and soulsand formation caused by nether cave generation.
• MC-129383 – Loading 18w16a worlds in 18w19b: [WorldGen-Worker-1/ERROR]: Couldn't load chunk.
• MC-129526 – Grass and ferns don't show up on a map.
• MC-129629 – 1.13 worlds isn't loading for sometimes.
• MC-129725 – All solid blocks can pass light when converting a world from 18w16a to 18w20+.
• MC-129980 – Some users cannot use F3-related features properly.
• MC-130020 – piston_inventory.json is outside of the block models file.
• MC-130169 – Enchanted items with capitals in enchantment ID cause crash (path of location: minecraft:Cookie).
• MC-130374 – vSync turns off in fullscreen mode.
• MC-130475 – Boats immediately sink when placed on water.
• MC-130486 – Side of water and lava not rendered besides non-full-height blocks.
• MC-130554 – Waterlogged blocks have a full cube hitbox.
• MC-130615 – Using a resource pack with a block model with itself as a parent removes all textures.
• MC-130667 – Flowing water freezes in frozen biomes.
• MC-130690 – EntityTag for spawn eggs is not working.
• MC-130778 – End return portals don't return you to the center End Island.

From the previous development version

• MC-131343 – Crash when clicking on a recipe in the recipe book without sufficient ingredients.
• MC-131344 – Texture z-fighting on baby horse legs.
• MC-131416 – Conversion of a 2013 world crashes as of 1.13.
• MC-131419 – Squids, fish, and dolphins don't suffocate on land.
• MC-131458 – Cobwebs don't appear on maps.
• MC-131633 – Mobs get stuck on carpet.
• MC-131706 – Water doesn't destroy carpet.

Private issues

• MC-131154 – Resource locations allow empty path pieces^[1]
• MC-131400 – Structure names allow trailing dots for folder names^[1]