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Java Edition



Release date

January 4, 2013[1]

Snapshot for



Server (.exe)

Protocol version


13w01b is the second snapshot for Java Edition 1.5, and was released to fix some of the bugs and crashes in the 13w01a snapshot.



  • All containers output a redstone signal when a Comparator is placed against it directly.
    • The strength of it depends on how full the container is.[2]
  • This works with Trapped Chests as well, meaning it can provide two redstone signals with different causes at the same time.
Locked Chests
  • Texture was changed with an additional redstone block.


20 bugs fixed

From released versions before 1.5

  • MC-302 – TNT explosion delayed until exiting and re-entering world.
  • MC-1619 – Infinite rail duplication glitch.
  • MC-3287 – Inconsistency with pistons pushing items.
  • MC-3339 – Tile entity crashing bug.

From the previous snapshot

  • MC-5711 – Removing a block with a redstone torch on it will not remove the redstone torch.
  • MC-5721 – Crash when using new inventory features.
  • MC-5728 – Infinite loop caused by a comparator (on subtractor mode) feedback loop.
  • MC-5729 – Only one block disappears when an Iron Golem or Snow Golem or Wither is created.
  • MC-5746 – TNT render blocks invisible.
  • MC-5748 – You can place anything in a container or Minecart or Furnace Minecart with the Hopper.
  • MC-5759 – New inventory mechanics can break crafting.
  • MC-5768 – TNT explosions that destroy the chest being viewed causes a crash.
  • MC-5773 – Breaking a chest with another player viewing the contents will kick that player out of the server.
  • MC-5786 – Players could not smelt Nether quartz ore.
  • MC-5789 – Yellow text object counter (displaying a 0).
  • MC-5798 – Hopper does not pick up all items dropped into it.
  • MC-5845 – Duplications – ingots/diamonds etc.
  • MC-5846 – TNT with Trapped chests.
  • MC-5871 – Comparator looks activated but has no output.
  • MC-5934 – Comparators don't have a delay.