Loving 2.0.1 have only hit two issues.
One, after playing for an extended period of time, the game begins to rapidly update large groups of chunks, 1000+ . Fixed with closing down and re opening the game.
Second as theland has posted, battle towers is out of wack. My world has virtually none, and then huge strings like so. They go on forever, if I follow them eventually I reach a spot where I crash ( Usually where it tried to fork and render in 3