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Minecraft 18w20c
Java Edition 18w20c.png

Java Edition



Release date

May 17, 2018

Snapshot for



Client (.json)

Protocol version


Data version


18w20c[1] is the thirty-seventh snapshot released for Java Edition 1.13.


23 issues fixed
From released versions before 1.13
  • MC-123524 – X amount of Command Blocks in a chunk glitches the chunk, structure blocks, entities, hitboxes and frame rate dramatically
  • MC-129571 – Skeleton traps are incredibly rare.
From the 1.13 development versions
  • MC-121377 – First character typed in command blocks doesn't let you hit "done".
  • MC-121673 – Rotation selector arguments do not allow max to be lower than min.
  • MC-123041 – Cannot ride a tamed horse, when holding tools, weapons and non-food items.
  • MC-123672 – Barrier blocks affect sunlight.
  • MC-125237 – Trident lights up nearby entities when thrown or in ground.
  • MC-125304 – Furnaces generated in a blacksmith (village) do not smelt any items
  • MC-125365 – Strong potion of slowness gives slowness level V.
  • MC-125625 – Glass panes, fences, iron bars and cobblestone walls sometimes fail to upgrade.
  • MC-126559 – Big chests are split into small chests.
  • MC-126993 – Some blocks in ocean ruins generate with waterlogged:false.
  • MC-128234 – Conduits have the wrong breaking particle.
  • MC-128243 – Dolphins do not try to get into the water.
  • MC-128346 – Double chest opens as one chest.
  • MC-128393 – Conduit connects to fences, walls, iron bars and glass panes.
  • MC-129517 – Game crashes while loading chunks with player heads.
  • MC-129657 – End Cities don't generate at all in positive co-ordinates.
From the previous development version
  • MC-129709 – Chests, signs, beds, shulker boxes, etc. overlay missing texture when mining.
  • MC-129732 – Conduit cannot be activated by dark prismarine.
  • MC-129733 – Conduit only spins when it has the maximum number of prismarine blocks.
  • MC-129738 – Trees generating in the ground or not at all.
  • MC-129747 – Village generates partially in the ground.


Video made by slicedlime:


  • This version was released 9 years after Classic 0.0.11a, the first publicly released version of Minecraft.


  1. "Minecraft Snapshot 18w20c" – Minecraft.net, May 17, 2018