Java Edition 21w14a

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Minecraft 21w14a
Java Edition 21w14a.png

Java Edition



Release date

April 7, 2021

Snapshot for



Client (.json)

Obfuscation maps


Protocol version

 dec: 1073741845
 hex: 40000015

Data version


21w14a is the sixteenth snapshot for Java Edition 1.17, released on April 7, 2021,[1] which adds raw metals and the ability to wax oxidized copper and cut copper, as well as fixes some bugs.



Block of Copper
  • Added waxed variants of oxidized copper, cut copper, and their variants.


Raw metal



  • Added waxed oxidized cut copper stairs and slabs to the stairs, and slabs block and item tags, respectively.
  • Added raw gold to the piglin_loved item tag.


19 issues fixed
From released versions before 1.17
  • MC-207173 – Entering only colons into the multiplayer "Direct Connection" menu and pressing ↵ Enter crashes the game.
From the 1.17 development versions
  • MC-203854 – Fishing rod texture always looks like it has been cast when in the player's hand.
  • MC-210155 – Command block output no longer is displayed immediately after running a command.
  • MC-213665 – Crash upon attempting to generate a world with a height of 0 blocks.
  • MC-214287 – Crash upon entering a nether portal when logical_height is set to 0 and min_y is set to 80 or greater.
  • MC-214823 – Ice spikes can generate in caves.
  • MC-215120 – World-gen datapacks can cause crashes when first generating world.
  • MC-216649 – Default type surface builders don't generate below y=50.
  • MC-216697 – Having min_y set to lower than -64 causes either a crash or the world not to behave correctly if the height limit wasn't modified.
  • MC-217702 – Game crashes (ArrayIndexOutOfBoundsException) during world feature placement / decoration.
  • MC-218669 – Mineshafts don't connect to the caves ceiling in case of a lava lake and are floating.
  • MC-219849 – Fishing does not animate or render the rod, line or bobber anymore.
  • MC-220054 – Crafting preview for furnaces/blast furnaces cycle through Deepslate Copper, Emerald & Coal Ore.
  • MC-220066 – Barrels can be duplicated by blowing them up while they are open.
  • MC-220652IndexOutOfBound exception hard crash when loading a simple custom dimension datapack.
From the previous development version
  • MC-221549 – Parity Issue: there is no waxed oxidized copper.
  • MC-221553 – The end dimension generates differently than it did previously.
  • MC-221586 – Excessive pillager spawning in pillager outposts.
  • MC-221673 – Ocean monuments are completely empty.


Videos made by slicedlime:


  1. "Minecraft Snapshot 21w14a" –, April 7, 2021