Java Edition 13w21b

13w21b is the ninth snapshot for 1.6.1, which was released to fix some of the bugs and crashes in the 13w21a snapshot.

This version was previously removed from the launcher for some time, but was added back in September 2018.

Fixes
7 bugs fixed

From released verisons before 1.6.1
 * – Certain death message will print "null" as the player/mob name that caused the death.
 * – lang files for en_US is grammatically incorrect at death.fell.finish.item.

From the 1.6.1 snapshots
 * – Enchanted Items stored in a Donkey / Mule lose enchantments on its death.

From the previous snapshot
 * – Sprinting and speed effect not working.
 * – Server doesn't translate strings.
 * – No sounds after a while/music corrupting sound.
 * – Crash: IllegalArgumentException.