Java Edition 1.20 Pre-release 1

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1.20 Pre-release 1 (known as 1.20-pre1 in the launcher) is the first pre-release for Java Edition 1.20, released on May 10, 2023,^[2] which brings more parity from Bedrock Edition and fixes bugs.

Beds, carpets, and wool

• Colored variants can now be dyed any other color.

/data

• string data sources now accept negative boundaries, which are interpreted as index counted from the end of the string.

Damage type

• Added outside_border, and generic_kill.
  • Players outside the world border are now hurt by the damage type outside_border instead of in_wall.
  • Forcibly removing an entity using i.e. the /kill command now uses damage type generic_kill instead of out_of_world.

Death messages

• Changed death message used for the /kill command.
  • Changed from "<player> fell out of the world" to "<player> was killed".
• Changed death message used for deaths caused by the world border.
  • Changed from "<player> suffocated in a wall" to "<player> left the confines of this world".

Loot table

• Random sequences for loot tables are now deterministic.
  • The game now uses named random sequences to deterministically produce loot for loot tables.
  • Each random sequence produces a unique sequence based on the world seed and sequence identifier, which means a loot table will produce the same results when ran with the same parameters in the same world.
  • The identifier of the random sequence to use for a loot table is specified as a resource location in a new field called random_sequence.

server.properties

• Changes in encoding.
  • The file is now read in UTF-8 initially, with previous encoding (ISO 8859-1/Latin 1) as a fallback.
  • File is now written with UTF-8 encoding.

Tags

• Removed pumpkin, and melon from #maintains_farmland block tag.
• Added generic_kill, and outside_border to #bypasses_armor damage type tag.
• Added generic_kill to #bypasses_invulnerability, and #bypasses_resistance damage type tags.

36 issues fixed

From released versions before 1.20

• MC-180 – When reaching the other side of a nether portal the animation plays forever until stepped out of.
• MC-2215 – Encoding errors in server.properties.
• MC-18060 – Several realms strings are untranslatable.
• MC-21520 – Death message for /kill is "<player> fell out of the world"
• MC-35078 – Breaking animation is one frame off.
• MC-107224 – World border death message states "suffocated in a wall"
• MC-123081 – Placing an end crystal when entering The End prevents Ender Dragon from spawning.
• MC-146582 – When entering spectator mode while standing on the ground, the player moves down by 0.19051 blocks, which makes you fall down.
• MC-188595 – "gamemode" string in F3 + N description is inconsistent with "game mode" string in F3 + F4 description
• MC-193749 – Nether portals play the trigger sound again when the other dimension is loaded.
• MC-195781 – The "Include entities:" string displayed within the structure block GUI is improperly capitalized.
• MC-195825 – "datapacks" string is inconsistent with "data pack" string in datapackFailure.title text.
• MC-196428 – The nausea effect resets its distortion severity when players' NBT data is reloaded.
• MC-197270 – Item icons in + screen display over fading in Mojang Studios screen when reloading resource packs using + at the exact same time.
• MC-198202 – Options background texture does not match dirt texture.
• MC-203039 – Incorrect use of colon in options.hideMatchedNames.tooltip.
• MC-206548 – Leash knot subtitles are not properly capitalized.
• MC-226454 – The "Light as a Rabbit" advancement description has no space after the ellipsis.
• MC-236606 – Lightning bolt related string lacks capitalization.
• MC-241736 – Company names are still inconsistent and partly misspelled in the credits.
• MC-250571 – Gamerule description strings within the world creation menu consist of inconsistent concluding punctuation.
• MC-256424 – Game mode is sometimes referred to as "gamemode".
• MC-257336 – Some chiseled bookshelf interaction subtitles are improperly capitalized.

From the 1.20 development versions

• MC-262006 – Melon and Pumpkin are in the default #maintains_farmland tag despite not maintain farmland.
• MC-262208 – In the credits, "Lionbridge" is misspelt in one place (no "g").
• MC-262253 – Music composers not listed in credits.
• MC-262265 – Changing resource pack that overrides a font crashes JVM.

From the previous development version

• MC-262296 – Rabbits are no longer affected by jump boost.
• MC-262300 – Menu text is now rendered in front of the Mojang Studios loading screen fade animation.
• MC-262304 – The stepping_on predicate condition does not correctly succeed on trapdoors.
• MC-262308 – Entities do not stick to honey blocks pushed by pistons if their center isn't over the honey block.
• MC-262313 – Nether won't load in upgraded worlds.
• MC-262317 – Items don't respect properties of the block they are supported on.
• MC-262351 – Worldgen deadlock caused by supporting block checks.
• MC-262363 – Player can still gain a normal jump off of a honey block with precise timing.
• MC-262424 – Sprinting particles on the edges of blocks are still incorrect.