Minecraft 1.17.20.23 Changelog

Features and Bug Fixes 

Stability and Performance 

• Fixed several crashes that could occur during gameplay  
• Optimized pasting unicode text into Book & Quill
• Fixed a crash that could occur when crafting a Crafting Table with Gameplay Tips enabled 

Gameplay 

• Fixed Bed display if the foot of the Bed is in a brighter area than the head
• Fixed Large Chest display so the brightest end of the Chest is chosen
• Travelling through End portals can no longer cause players to take fall damage

Items 

• Made projectile items move more smoothly when far from players
• Holding a Shield in Marketplace maps no longer shows a content error  
• Strong/long/splash/lingering potions can be placed in the Brewing Stand manually

Mobs 

• Undead mobs standing near Powder Snow now burn normally
• Powder Snow above undead mobs now prevents burning effect 
• Multiple Shulkers will no longer be able to spawn in the same position from spawn eggs or End City generation
• Mobs can now pathfind correctly when standing on Amethyst Buds
• Fixed Horses sometimes becoming invisible after players dismount them
• Grown up Goats no longer lose their Horns when reloading a world 
• Lightning no longer randomly strikes mobs that are under blocks

Blocks 

• Spore Blossom no longer has a randomly offset hitbox
• Moss Block and Moss Carpet now break when moved by Pistons and Sticky Pistons can no longer pull them
• Water dripping from Pointed Dripstone can no longer fill Cauldrons with Potions
• Measurements of hitbox of Spore Blossom now match Java Edition 
• Fixed issue causing Slime and Honey Block movement slowdown to not be fully applied to players 

User Interface 

• Emote wheel no longer appears when pressing Ctrl+B in-game
• Fixed Input Method Editor (IME) not working after suspending the game on Windows 10
• Added a new sidebar to Marketplace and Dressing Room related screens to help better improve the experience of navigating these areas 
• There is now an item transferring animation when deselecting a recipe 

Commands 

• Loading a structure with the "/structure" command now displays the correct output messages

Technical Updates 

GameTest Framework (Experimental) 

• Renamed module "Minecraft" to "mojang-minecraft" 
• Renamed module "GameTest" to "mojang-gametest" 
  • Renamed function assertBlockTypePresent to assertBlockPresent 
  • Renamed function assertEntityData to assertEntityState 
  • Removed function assertBlockTypeNotPresent 
  • Removed function assertEntityNotPresent 
  • Removed function assertEntityNotPresentInArea 
  • Removed function assertEntityNotTouching 
  • Removed function succeedWhenEntityNotPresent 
  • Modified signature of function assertBlockState(blockLocation: BlockLocation, callback: (Block) => boolean) 
  • Modified signature of function assertBlockPresent(blockType: BlockType, blockLocation: BlockLocation, isPresent: boolean) 
  • Modified signature of function assertEntityPresent(entityTypeIdentifier: string, blockLocation: BlockLocation, isPresent: boolean) 
  • Modified signature of function assertEntityPresentInArea(entityTypeIdentifier: string, isPresent: boolean) 
  • Modified signature of function assertEntityTouching(entityTypeIdentifier: string, location: Location, isTouching: boolean) 
  • Modified signature of function succeedWhenEntityPresent(entityTypeIdentifier: string, location: Location, isPresent: boolean) 
  • Added GameTestExtension function assertBlockProperty(propertyName: string, value: number | string | boolean, blockLocation: BlockLocation) 

Commands 

• The '/particle' command position argument is now optional
• The '/particle' command will now output on success
• The '/particle' command no longer shows an error when run successfully through '/execute'

Gameplay 

• Data-driven blocks can now be added to the Creative menu  

Molang 

• 'min_engine_version' from Resource Pack and Behavior Pack manifests is now passed into Molang expression parsing. This allows for future breaking changes tied to a specific engine version  

User Interface 

• UI bind objects can now utilize the ignore field