Lack of fireworks in Creative mode.

Bottom of Glass Panes Z-fights with Cobblestone Upper Half Slabs

The player model in the inventory screen renders in the wrong orientation when it's not standing up straight

Zombies first walks slowly, and then walks normally when punching it with your fist.

Minecraft crash when updating entities and their neighbors.

Server consoles will usually output SocketExceptions.

Minecraft crashes while staying in the Main Menu, and leaving it unattended for a few hours.

Unable to directly type § in Anvil, Book and Quill, or chat

Crash: NullPointerException - Vec3 Pool Size

The /say command no longer shows text in its original purple text color.

Players get kicked automatically if another player with the same name joins a server. It should be the opposite.