Java Edition 19w12b

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Minecraft 19w12b

Java Edition



Release date

March 21, 2019

Snapshot for



Client (.json)

Protocol version


Data version


19w12b is the twenty-eighth snapshot for Java Edition 1.14, released on March 21, 2019,[1] which fixes some bugs.



  • Mobs no longer suffocate in glass.


Iron golems
  • Spawn chance has been slightly increased:
    • Now requires 5 villagers to meet instead of 10.
    • Villagers that are recently hurt by zombies have a higher chance of spawning an iron golem.
  • Villagers no longer look at players in spectator mode.


22 issues fixed
From released versions before 1.14
  • MC-68687 – Entering or breaking Minecart briefly plays riding sound
  • MC-70057 – Can't place redstone on sea lantern
  • MC-117619 – The player's hitbox does not match his model when he sneaks.
  • MC-129750 – Non [a-z0-9_.-] character in one advancement causes ALL advancements to not load with no error message
  • MC-135376 – being in water at y 0 makes screen too dark
  • MC-136218 – Syntax help is offset to the right
  • MC-136327 – Drowned never spawn in river biomes
From the 1.14 development versions
  • MC-137784 – Vindicators sometimes get stuck in their attack animation.
  • MC-138179 – Crashes when enabling fullscreen (snapshot).
  • MC-139394 – Entities suffocate in glass.
  • MC-140469 – Paths drop down when generating.
  • MC-141155 – Structure block integrity solely dependent on structure location, integrity seed is ignored.
  • MC-141484 – Entities stay on the global list even when the chunk unloaded.
  • MC-142703 – Joining world outside of spawn chunks whilst riding entity results in desync
  • MC-145731 – Turning in boats causes extremely annoying frame issue.
  • MC-145864 – Villagers see players in spectator mode.
  • MC-146166 – Internal Java error after opening barrel (ticking error).
  • MC-146218 – Stuttering screen when spectating someone.
From the previous development version
  • MC-146244/clear removes item in cursor in creative mode even if it's not the item that should be cleared.
  • MC-146246 – Crash when a conduit is activated.
  • MC-146252 – Can no longer dye signs in survival mode.
  • MC-146258 – Head in glass blacks out world in first person view.


Video made by slicedlime:


  1. "Minecraft Snapshot 19w12b" –, March 21, 2019