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Minecraft Snapshot 23w42a Update: Patch Notes & How to Install

Posted on by brandon
Coming off of the very exciting Minecraft Live 2023, Mojang has released its next major snapshot update. These snapshots allow players to test upcoming features in Minecraft in their own saves, but be careful, as it can corrupt saves if you aren't careful! Here we'll break down everything you need to know about Minecraft Snapshot 23w42a, including its patch notes, and how to get started.

Minecraft Snapshot 23w42a Patch Notes

First we'll dive right into the latest Minecraft Snapshot patch notes, including a new look at the Crafter block! Minecraft 1.21 Update: Auto Crafter Screenshot


  • The Crafter is a new block that enables the crafting of items and blocks via Redstone
  • The Crafter will eject one crafted item at a time when powered by a new Redstone signal/pulse (not a continuous signal)
  • Upon receiving this new signal, the Crafter will eject the recipe result from the front face
  • If the output result has multiple type of items all the result items will be ejected together
  • The Crafter can be oriented in any direction when placed
  • The Crafter has a 3x3 interactable crafting grid
  • The Crafter’s crafting grid slots are toggleable, meaning that the player can change the behavior of a slot by clicking or pressing on a slot with an empty hand
  • A slot that is ‘toggled’ cannot hold any items, and therefore cannot have items placed into it by other blocks, such as Hoppers and Droppers
  • Unlike the Crafting Table, the Crafter displays a preview of the crafted item which will be crafted and ejected on the next Redstone pulse but cannot be manually taken out by the player
  • The Crafter UI is shared between all players interacting with the Crafter, meaning that multiple players can interact with the Crafter at the same time, similar to Chests and Hoppers
  • The Comparator signal strength is 0-9, where each non-empty or toggled slot adds 1 strength
  • Hoppers can be used to both insert and pull out items from the Crafter
  • Droppers can be used to insert items into the Crafter
  • Moving items in from another block (ex: Hopper, Dropper) prioritizes filling items into slots following these rules:
    • Prioritize the first empty slot (from left-to-right, top-to-bottom)
    • If there are no empty slots then prioritize the smallest stack of the same item (pick the first if there are multiple)
    • If there is a toggled slot it will be skipped. The item will then be moved into the container
    • If the item cannot be moved, it will be ejected into the world
We want to hear your feedback on the Crafter, so please let us know what you think the over in our dedicated feedback thread.


  • Added an accessibility option that allows to hide the yellow splash texts in the main menu
  • Added a recovery screen for worlds with missing data (for example, if saving failed due to an unexpected shutdown)


  • The Data Pack version is now 21
  • The Resource Pack version is now 19
  • Minor changes to chat component serialization
  • The optional type field has a new allowed value: selector
  • Components of type nbt now have source field with allowed values entityblockstorage


  • Introduced Jigsaw structure pool aliases, which can be used to rewire pool selection
  • Added field block_state to tnt entity to allow replacement of rendered block model
  • Renamed field Fuse to fuse on tnt entity
  • Added playersNetherPortalDefaultDelay and playersNetherPortalCreativeDelay gamerules to control time (in ticks) that a player needs to stand in a Nether portal before changing dimensions
  • Added new gamerule projectilesCanBreakBlocks to control whether impact projectiles will destroy blocks that are destructible by them, i.e. Chorus Flowers, Pointed Dripstone and Decorated Pots
  • Added white_smoke particle type
  • Added optional pool_aliases list to Jigsaw structures
  • Aliases represent the possibility to rewire Jigsaw pool connections by redirecting pool references on individual structure instances
  • Alias variants are represented in type and is one of:
    • direct 1:1 mapping from an alias to a new pool
      • alias pool to replace
      • target pool to replace with
    • random 1:n mapping where a pool from n is randomly selected for the structure instance
      • alias pool to replace
      • targets randomized list of candidate pools to replace alias with
    • random_group
      • groups each group is a randomized list of above alias types
      • only one group is selected per structure instance
      • this enables modelling selections such as "if pool X is replaced with X1, also replace pool Y with Y1"


  • Added block model, item model and block state definitions for crafter
  • Added GUI container texture and sprites for crafter
  • Added white_smoke particle definition


  • MC-189261 - Various Realms buttons and texts are incorrectly capitalized
  • MC-223774 - Firework Rockets can't be used to break Chorus Flowers
  • MC-232719 - The scroll bar within the singleplayer menu doesn't reset its position to the top of the list when searching for worlds
  • MC-234483 - Some strange pixels can be seen on the left side of world slot frames within several realms menus
  • MC-262888 - Clicking "I know what I'm doing!" on the world loading screen when loading a world in a new snapshot is way too loud
  • MC-264966 - "Signature is missing from Property textures" appears in the logs of some Minecraft worlds due to player heads
  • MC-265515 - The "You don't seem to have a Realm" element in the realms menu cannot be selected via the mouse cursor
  • MC-265517 - The "Buy a realm!" button is automatically selected when opening the "Add Realm" interface
  • MC-265551 - "No pending invites!" tooltip in Realms is now untranslatable
  • MC-265744 - Kick during login causes client error
  • MC-265745 - You can’t break decorated pots with fireworks launched from crossbow
  • MC-265751 - Decorated pot subtitles are inconsistent
  • MC-265758 - Decorated pots can be destroyed by projectiles in adventure mode
  • MC-265761 - Decorated pots are missing from the creative inventory's redstone blocks tab
  • MC-265767 - Commands don't show error messages in chat
  • MC-265773 - Functions executed as advancement rewards are executed at the top level
  • MC-265778 - "gamerule maxCommandChainLength 0" prevents subsequent command execution in the world
  • MC-265789 - Realms popup strings consist of inconsistent concluding punctuation

How to Install Snapshot Updates for Minecraft

If you're looking to get your hands on the Crafter block and the other changes coming to Minecraft via Snapshot 23w42a, here's how to install the latest update! First, simply open your Minecraft launcher. Then, navigate to the Installations tab and select enable snapshots. Once that's done, click New Installation and the latest snapshot should be available in the drop-down menu. If the Minecraft snapshot 23w42a patch notes have you hype, there's plenty more to be excited about for the future of the game! Check out the biggest announcements from last week's Minecraft Live 2023 to learn more.
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