Java Edition 17w50a

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 "title": "Minecraft 17w50a",
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 "field": "[https://piston-data.mojang.com/v1/objects/ebb9600d0f33b6ffd1dec8fc3010677dc07accbc/client.jar Client] ([https://piston-meta.mojang.com/v1/packages/e116ee9be7f2aa00af3c3c6ff7a95991b550b1b6/17w50a.json .json])<br />[https://piston-data.mojang.com/v1/objects/670c67a4dfbd1070a9be629124ddd8aac8d9b9d9/server.jar Server]",
 "label": "(link to Tutorial:Installing a version#Manual version installation article, displayed as Downloads)"
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 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Resource pack format)</span>"
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 "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Data pack format)</span>"
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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 17w49b|◄  17w49b]]\n</td>\n<td style=\"padding: 0.4em\">''' 17w50a'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition 18w01a| 18w01a ►]]\n</td>\n</tr>\n</table>"
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17w50a is the eleventh snapshot for Java Edition 1.13, released on December 11, 2017^[1]. This is the final snapshot released in 2017.

• Added a new local coordinate type in commands using ^.
  • When specifying coordinates in a command, the player can now use ^ to specify local coordinates instead of world coordinates.
  • The axes used for local coordinates are relative to the rotation of the executing entity.
  • Like world coordinates, they are measured from the base of an entity.
  • The syntax is: ^left ^up ^forwards
  • left/up/forwards is the amount of blocks in the specified direction.
  • For example, typing /setblock ^ ^ ^3 stone in chat sets a stone block 3 blocks in front of the player in their view.
• Tab-completing coordinates when not targeting a block suggests ~ ~ ~ again.

Tags

• Added the default tags wooden_buttons and wooden_doors for both items and blocks.
• The tags buttons and doors now include stone_button and iron_door respectively for both items and blocks.

Ender chests

• Now change their texture when the computer time is set to the 24th to 26th of December to suit Christmas.

Item frames

• Can now be placed on the top and bottom of blocks.

Tags

• Can now include other tags (of the same type).
  • The player can add for example #foo:bar in a tag value list to reference another tag called foo:bar.
  • Self-referencing is not possible.
• When overriding a tag, the player can now choose to replace instead of append.
  • By default all tags append if another data pack created the tag.
  • Adding "replace": true to the tag definition makes that tag replace existing tags instead.
• When used in commands, block tags now support block state and data tag arguments.

57 issues fixed

From released versions before 1.13

• MC-1168 – Lily pad sometimes destroys water block.
• MC-1218 – Arrows shot at the top half of a door will float once the door is opened.
• MC-5694 – High-efficiency tools/fast mining destroys some blocks client-side only.
• MC-11142 – Placing a redstone torch/block next to a rail junction does not change the rail direction.
• MC-11242 – When a player jumps and places a fence post under them, they would get inside the fence post.
• MC-35119 – Buttons for video settings to not make a sound.
• MC-48522 – Ctrl + Pickblock on a flower pot gives player the flower (+NBT) instead of the flower pot.
• MC-53448 – Sliders cannot be adjusted accurately (tested in customized world settings).
• MC-62093 – Double plants get generated without bottom part.
• MC-72634 – Lily Pad placement noise inconsistent.
• MC-90174 – Carpet ghost blocks.
• MC-93468 – Water and lava flow affected by random ticks.
• MC-97355 – Lily pads placed on ice plays wrong sound.
• MC-98928 – Snowballs launched from a boat destroyed instantly.
• MC-99057 – Cannot place corner vines.
• MC-105832 – Torch doesn't work in one block space.
• MC-108749 – Mushrooms and crops cause double plants to drop; leaves "head" of plant behind.
• MC-112929 – Beacon coloring issue.
• MC-113420 – Boats can be placed outside the world border.
• MC-114454 – Placing flowers in flower pots do not update the flower pot for nearby players.
• MC-114722 – Projectiles collide with hitbox of block instead of with collision box.
• MC-114953 – Setting title times to negative values acts like /time ... clear.
• MC-115322 – Updating string line in front of unattached tripwire hook that faces north or east updates blocks around the hook.
• MC-118194 – Ladders can be placed on any block when used with stairs.
• MC-118346 – Blocks that will be replaced when another block will be placed on them do not work with CanPlaceOn tag.
• MC-118850 – Vines use opposite facing value when trying to spread in corners.
• MC-120056 – Saving a structure to a subfolder fails if the folder does not exist yet.
• MC-120709 – Lava and water updates do not resolve completely when random ticking is disabled.
• MC-120911 – Can't place snow_layer in adventure mode.
• MC-123365 – +2 block cactus does not break with water (inconsistency).

From the 1.13 development versions

• MC-121650 – Tab auto-completion is case-sensitive.
• MC-121863 – x_rotation seems to behave like y_rotation.
• MC-122154 – Sometimes beds take strange shapes when placed.
• MC-122159 – Container inventory changes don't update nearby comparators.
• MC-122317 – Game crashes when a colon is entered after a slash or another colon in commands.
• MC-122403 – Detecting a 2 redstone tick repeater with an observer creates 2 pulses.
• MC-122580 – Recipe files and advancements for recipes are not fully/correctly updated to flattening names.
• MC-122591 – OS locale is used for coordinate tab-completion.
• MC-122593 – Coordinate arguments are tab-completed to farthest theoretically reachable block in the direction the player is looking instead of '~' when not looking at a block.
• MC-122791 – Double blocks break after replacing tall grass/large fern.
• MC-122819 – Changes to the hitbox of hoppers makes them unable to pick up items.
• MC-122899 – Falling blocks top/bottom texture change rotation as they fall.
• MC-122927 – Cullface on the tops and bottoms of glass panes aren't triggered by other glass panes on top or below.
• MC-122953 – Crash when typing scoreboard criteria with invalid character.

From the previous development version

• MC-122987 – Pistons lose piston head when pushing the block which powers it.
• MC-123001 – Custom tags can match air if they contain an invalid block name.
• MC-123004 – Random rotation for blocks like sand, concrete powder, grass and custom block models doesn't work properly.
• MC-123014 – Invalid function tags prevent world from loading.
• MC-123018 – Water and lava flowing texture error.
• MC-123032 – Tags overwrite, don't append.
• MC-123050 – The bed can be put in water, because of what it breaks and does not drop.
• MC-123051 – Cactus can be placed underwater.
• MC-123054 – Carpets don't drop their item when pushed onto air.
• MC-123089 – stone_button/iron_door is not included in #buttons/doors.
• MC-123111 – Stack Overflow in /data get entity.
• MC-123112 – The top of walls are transparent when there is a skull above.

Private issues

• MC-94675 – Private issue involving huge mushrooms

• Unlike most of the first-of-the-week snapshots up to this point, this was released on a Monday instead of Wednesday, similar to 17w48a.