Java Edition 18w02a

18w02a is the thirteenth snapshot for Java Edition 1.13, released on January 10, 2018^[1], which changed the /teleport command.

Additions

Now have an entity ID, fishing_bobber.
- This ID can only be used for testing, summoning is not possible.

Hitbox has been decreased from using the player's hitbox to be 0.25x0.25x0.25 blocks.

Added new sub-commands to /execute to allow for more control over commands.
- facing <x y z> runs the command as though the executor is facing x y z.
- facing entity <entity> (eyes|feet) runs the command as though the executor is facing the entity's eyes or feet.
- offset <x y z> has been renamed to positioned x y z.
- positioned as <entity> changes the command position (x y z) but nothing else.
- rotated as <entity> or rotated y x runs the command as though the executor is rotated in that direction.
- in (overworld|the_end|the_nether) runs the command as though it's in that dimension.
- at <entity> changes the dimension, position and rotation of the command to match that entity.
- (if|unless) score <name> <objective> matches <range> tests for a score in a range (ie 1, 1..5).
- anchored (feet|eyes) makes the rest of this command use feet or eyes for ^ ^ ^ coordinates or facing commands.
Server commands (functions, console, rcon) now run from world spawn in the Overworld, instead of at 0,0,0.

Error messages

Errors during a command are now a nicer error message (with a tooltip for more info).

Translation files

Changed from .lang (key=value) to .json ("key": "value").
- Now supports newlines.

From released versions before 1.13

MC-5461 – Block stats does not count red mushrooms, sugar canes, etc.
MC-9669 – Player renders black in a 1x1 shaft with torch in upper block.
MC-63748 – Commands with incorrect syntax executed for multiple entities prints error message multiple times.
MC-64539 – Spreadplayers respectTeams and player arguments have no tab completion.
MC-68446 – Some entities have missing translations string in the lang files.
MC-68809 – Held Item renders black when in a 1 x 1 shaft with torch in upper block.
MC-73207 – Minecraft server list displays "Can't connect to server" on startup.
MC-76312 – Testfor output doesn't show UUID or team color.
MC-81806 – worldborder add allows size >= 0 while world border set only allows size >= 1.
MC-108967 – "Selector '<selector>' found nothing" message is missing for /scoreboard teams join/leave.
MC-120747 – Stairs change hitbox when a piston moves the block.

From the 1.13 development versions

MC-121662 – Unhandled exceptions in commands just dump the exception into chat, without the "unknown error" message.
MC-121712 – advancement command in function file causes game crash.
MC-122579 – All COLOR_wall_banners are missing translation keys.
MC-122608 – Minecraft crashes when typing in a block-related command in front of an entity.
MC-122610 – Giving 0 of any item results in the chat message saying that player got 0 air.
MC-122751 – /data doesn't update a block entity's visuals until reload.
MC-122893 – "/execute as/at" does not change the dimension of execution.
MC-122908 – Crash upon world load: java.lang.NullPointerException: Exception in server tick loop.
MC-122956 – Function paths with invalid characters results in the game freezing.
MC-123104 – '/scoreboard players reset' removes name from sidebar of different objective.

From the previous development version

MC-123764 – Single-player menu world version not displaying correctly.
MC-123771 – Server crashes when an item frame with a map is loaded, and no player has that map in their inventory.
MC-123774 – Players cannot test for names with name= anymore.
MC-123782 – Game crashes if an item has a name that's invalid JSON.
MC-123818 – /teleport <player> facing <entity> doesn't work if the entity is not rendered, unlike other /teleport operations.
MC-123832 – Crash reports output TextComponent object for entity names rather than its text.
MC-123833 – Connect/Disconnect messages output TextComponent object rather than the player's name.
MC-123891 – NullPointerException on empty TextComponent.
MC-123931 – Using /data merge on a structure block to change its rotation/mirror does not update the way the structure is loaded until the world is reloaded.
MC-123932 – Players cannot open locked containers with the Lock nbt anymore.
MC-123943 – Clicking a player's name in chat dumps raw TextComponent.
MC-123974 – Command List DataProvider incorrectly labeled as "Item List".
MC-124051 – Varieties of /teleport create ambiguities for tab

Video made by slicedlime: