Java Edition 1.12-pre4

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Minecraft 1.12-pre4

Java Edition



Release date

May 18, 2017

Pre-release for



Client (.json)

Protocol version


Data version


1.12-pre4[1] is the fourth pre-release for Java Edition 1.12.


Command format[edit]

  • /function
    • Added new arguments:
      • if <selector> - runs the function only if the specified selector is found (currently only matches 1)
      • unless <selector> - runs the function except when the specified selector is found (currently only matches 0 or 2+)



  • Beds now have the correct color on the map.


17 issues fixed
From the 1.12 development versions
  • MC-115025 – Clicking on recipe or on book to close crafting help additionally clicks in inventory
  • MC-116622 – Sometimes blocks from Creative inventory can't be placed or dropped
  • MC-116723 – Particles of cracks when breaking colored shulkers boxes appear with the old color
  • MC-117428/function with /execute "An unknown error occurred while attempting to perform this command"
  • MC-117450 – Fences and walls now connect to melons, pumpkins, and jack-o'lanterns
  • MC-117543 – Recipe book is inconsistent with existing UI elements
  • MC-117544 – Colored beds don't appear colored on maps
From the previous development version
  • MC-117560 – Recipe book crashes the game upon attempting to craft
  • MC-117562 – Executing a function as an entity doesn't use new sender
  • MC-117563 – Crash when using enchanted bow to craft dispenser via recipe book
  • MC-117564 – Game crashes when you click "advancements" button while there is no advancement done
  • MC-117579 – Tools and weapons tab icon of recipe book isn't centered
  • MC-117580 – Recipe book doesn't update crafting grid if one of its slots already has enough items to craft as often as possible
  • MC-117586 – Feeding a parrot uses item in off-hand as well
  • MC-117589 – Feeding parrots cookies shows "fell out of world" death message
  • MC-117593 – Cookies kill invulnerable parrots in survival mode
  • MC-117605 – Ladders can be placed on transparent blocks if a solid block is nearby


Video made by slicedlime:


  • 1.12-pre4 was previously removed from the launcher for some time, but was added back in September 2018.