This summary will include the following bugs, seed box error, chunk loading refuses to load at certain areas, hitting animals cause graphical errors, sign invisibility, and railing connecting to rails incorrectly.

Text will not stay in the box.
When creating a world, you can infinitely type in the seed box

If you explode tons of tnt
Chunks wont render untill 30seconds to a minute later.

Hitting Animals
Causes game to suddenly go very dark.

Signs
Some reason are invisible except text.

Rails connect wierdly
Rail would connect to another rail, but the other rail doesnt connect with it.