Java Edition 1.13-pre4

1.13-pre4 is the fourth pre-release for Java Edition 1.13.

Changes

 * Updated LWJGL from version 3.1.2 to 3.1.6.
 * Biome names are now sorted alphabetically in the buffet menu.
 * Observer behavior reverted from 1.13-pre3: If they are placed by hand, they won't make a redstone pulse.

Video
Video made by slicedlime: