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Minecraft 17w50a
Java Edition 17w50a.png

Java Edition



Release date

December 11, 2017

Snapshot for



Client (.json)

Protocol version


Data version


17w50a[1] is the eleventh snapshot released for Java Edition 1.13, and the final snapshot released in 2017.


Command format[]

  • 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 will set a stone block 3 blocks in front of the player in their view.
  • Tab-completing coordinates when not targeting a block will suggest ~ ~ ~ again.


  • 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
  • Will now change their texture when the computer time is set to the 24th to 26th of December to suit Christmas.
Item frames
  • 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 will make 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


Video made by slicedlime:


  • 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.


  1. "Minecraft Snapshot 17w50a" – Minecraft.net, December 11, 2017