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1.13.1 is an upcoming minor update, which will primarily add the ability for fish mobs to drop bone meal, allow coral to generate when using bone meal underwater, add dead coral, add a search bar in the world list, change the spawning conditions of squids, add the /chunk command, and fix bugs.

Additions

Blocks
  • Re-added punch-to-explode TNT using the unstable state (instead of the explode state in 1.12)
  • Added dead coral
Debug screen
  • Added Ctrl + F3 + C to force a JVM crash, instead of a regular crash. However, currently it only triggers with right control.[1]
Entities
  • Fish now have a 5% chance of dropping bone meal when killed.
Items
  • Bone meal used in water of warm ocean biomes now has a chance to grow coral.
World list
  • Added a search bar in the world list.
General
  • Added a concept of force-loaded chunks to the game, and a command (/chunk) to toggle force-loading on and off.
  • Added the block tag minecraft:underwater_bonemeals.

Changes

Blocks
Command format
  • The scoreboard operator %= was changed from using Java's native % to using Math.floorMod. This causes the operator to use floored modulo instead of truncated modulo, so now -1 % 7 wraps to 6 instead of returning -1.[2]
Entities
  • Squids now spawn only in rivers, oceans, or beaches.
  • No longer fall through the entire world when they are inside blocks (135385)
Functions
  • Line numbers in function parse error logs now start with 1 (was 0).
General
  • Performance has been optimized.

Fixes

91 issues fixed
From released versions before 1.13
  • MC-73 – Green arrow bug on maps in frames.
  • MC-1528 – Maps in item frames' markers aren't persistent.
  • MC-3927 – Iron golems can spawn in slabs, glass, farmland and grass path.
  • MC-33383 – Lag while taking screenshot with F2 in singleplayer.
  • MC-59517 – TNT explode=true blockstate drops TNT item when fused by hit in Survival mode.
  • MC-74764 – Particle "largeexplode", "hugeexplosion" and “sweepattack” not showing when using the front view (twice F5).
  • MC-75465 – Vignette effect's visibility is not being updated according to light level when GUI is hidden.
  • MC-76615 – Lightning bolt summoned by /summon is offset +0.5x and +0.5z.
  • MC-78963 – Command completion fails with multiple possibilities and other arguments set
  • MC-84005 – Book and quill doesn't save changes when edited in offhand.
  • MC-88099 – Slimes/magma cube with NoAI tag still can damage the player.
  • MC-88356 – Bow animation broken in off-hand in third person.
  • MC-96998 – End Cities / Woodland Mansions don't generate completely when interrupting generation
  • MC-105512 – Cracks appear inside dragon head instead of outside.
  • MC-112801 – Players on the death screen still cause spawners to spawn.
  • MC-114218 – Dispensers and droppers don't offset smoke particles when facing up or down.
  • MC-119856 – Slime blocks missing cullface argument.
  • MC-119971 – Various duplications, deletions, and data corruption at chunk boundaries, caused by loading outdated chunks – includes duping and deletion of entities/mobs, items in hoppers, and blocks moved by pistons, among other problems.
  • MC-120664 – Tool durability is off-by-one.
  • MC-120780 – Chunk data packets are sometimes created unnecessarily.
  • MC-121152 – WorldClient leaks player and painting entities
  • MC-122614 – Strange tab completion coloring.
  • MC-122939 – Statistics for mining banners and beds never increase.
  • MC-123586 – Debug pie chart uses locale specific number formatting.
  • MC-123880 – Clientbound play packet 0x0C (Boss Bar) using same byte for different booleans.
  • MC-124942 – "Invalid book tag" is not translatable.
  • MC-128547 – Minecraft keeps previously used World in memory if the player has hit any entity in that world.
From 1.13
  • MC-122563 – Disappearance of the old "punchable" TNT.
  • MC-122625 – Order of contents of north- and east-facing double chests changed after update 1.12.2 -> 1.13.
  • MC-123021 – Crash on open if "Saves" is a link
  • MC-123806 – Tab-completion/command suggestions only work for the final argument.
  • MC-124054 – Tab-suggestions don't disappear when moving cursor.
  • MC-124543 – JSON-Text formatting in CustomName of container blocks does not work.
  • MC-124681 – Tab suggestion erroneously suggests second closing square bracket on entity selectors.
  • MC-124690 – Successful /bossbar set players doesn't give success message in chat.
  • MC-124808 – Blocks don't pop off when their support blocks are moved by pistons.
  • MC-124917 – Selector suggestions do not disappear after adding the closing bracket.
  • MC-125134 – Server crashes while generating new chunks – java.util.concurrent.ExecutionException: We are asking a region for a chunk out of bound.
  • MC-125286 – Block state suggester does not include '=' for first key.
  • MC-129754 – Putting down lava freezes everything and then crashes the game when quitting.
  • MC-130258 – Maps in item frames show shading problems.
  • MC-131029 – Villager door detection range has changed.
  • MC-131397 – Sponges cannot remove water from conduits
  • MC-131462 – Coordinate math error causes structure not to generate and possibly other issues.
  • MC-131678/setblock properties block and value are reversed in error messages.
  • MC-131868 – Concrete powder next to waterlogged blocks is not converted to concrete.
  • MC-132663 – Command blocks kick player when entering certain commands > 256 characters in multiplayer.
  • MC-132664 – Obfuscated text uses same random character each frame for each input character.
  • MC-132703 – Iron golems do not spawn in center of village.
  • MC-132898 – Multiple layers of falling gravity blocks break.
  • MC-133154Placing a slab to stop the water flow doesn't remove the water.
  • MC-133181 – Observer's cooldown is broken.
  • MC-133251 – Curse enchantments don't use red text.
  • MC-133260 – Obfuscated text character set limited to simple ASCII.
  • MC-133273 – Normal Pistons also spit out their blocks with a short signal.
  • MC-133294 – Map markers are blacked out.
  • MC-133345 – Some bolded obfuscated characters causes text to jitter
  • MC-133425 – Missing Glyphs for (U+FF3B) and (U+FF08).
  • MC-133452 – Copying, pasting, etc. still insert "c", "v", etc..
  • MC-133453 – Players can't stand in "walk-through" blocks after swimming.
  • MC-133546 – Player becomes "ghost" when dying in the nether or going through the end portal back to the overworld
  • MC-133587 – Deleting server format error.
  • MC-133715 – Thrown tridents cannot be picked up after dying.
  • MC-133839 – Crash when /tp to the world border.
  • MC-133871 – Waterlogged trapdoors do not update properly when opened.
  • MC-133894 – Drowned don't drop items that they picked up as zombie then were converted.
  • MC-133905 – Large oak trees generate without making block under stump dirt.
  • MC-133942 – 1.13 Release is called a snapshot when backing up world.
  • MC-133959 – Credits don't appear when clicking "Copyright Mojang AB" in the title screen.
  • MC-133986 – Non [a-z0-9/. _ -] character in path of location: minecraft:EntityHorse.
  • MC-133995 – Transferring world from 1.12.2 to 1.13 isn't working.
  • MC-134105 – Can't return from the end after defeating dragon.
  • MC-134115 – Containers next to chunk borders can lose items when upgrading.
  • MC-134159 – Saved world causes crash in 1.13.
  • MC-134166 – Villager door detection order has changed.
  • MC-134273 – Player markers on map after disconnect.
  • MC-134274 – Map markers for players holding a different map.
  • MC-134297 – Observers detect moved blocks late in 1.13.
  • MC-134298 – Observers don't detect retracting sticky pistons.
  • MC-134300 – Inconsistency with update order when pistons retract other pistons.
  • MC-134348 – Crash while upgrading: bkv{block=Block{minecraft:acacia_slab}, properties=[type, waterlogged]} has no property: half.
  • MC-134414 – Concrete powder falling onto sea grass just replaces it.
  • MC-134468 – Map cloning recipe only yields 2 maps.
  • MC-134555 – Sticky piston does not update gravity blocks.
  • MC-134570 – Door top half missing when updating to new version.
  • MC-134667 – Async Chunk Gen dangerously adding entities to world async.
  • MC-134889 – Iron golems spawn in air blocks.
  • MC-134903 – Mobs can break turtle eggs by standing on them when gamerule mobGriefing is false.
  • MC-134916 – Sound event block.pumpkin.carve doesn't play when carving normal pumpkins.
  • MC-135049 – Old world doesn't save map markers in 1.13.
  • MC-135261/setblock for player heads don't show the texture after the placement.

References

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