The game progressively degrades in performance, becoming unbearably slow within minutes of loading a world. (This is caused by flowers that are generated in places where they break as soon as they appear, resulting in an increase in the number of entities. In rare cases, a flower or chunk will break in such a way to spawn insane amounts of entities, bringing the game to a grinding halt in seconds.)
Above-ground cave entrances cut into trees and brick pyramids, resulting in half-destroyed trees and brick pyramids containing caves. The entrances also do not turn dirt into grass, which results in patches of dirt strewn across the terrain near cave entrances.
Fixes
Due to the removal of the duplicate login detection, the game no longer randomly crashes with the "session conflict" screen.
Gallery
Cave generation in this version. The first image Notch posted depicting the new infdev caves.
Example of a flower that generated onto stone. An example of the insane amount of flower items that can generate in this version.
1.0