1. First person mode, with the character height adjustment enabled, causes the camera to shake if you do anything like attack. Its a very strange shake and somewhat annoying.
2. Collision sensitivity isn’t 100 percent perfect (its beta so that is to be expected). Whenever I tested the collision with threes, I would rotate the camera around my character. It would rotate relatively smoothly and go around the tree as well, but only if you do it at the perfect vertical angle. If you don’t, then it will end up zooming in right to your character. Sorry I can’t explain this any better. Try it by zooming out all the way, enabling collision sensitivity only enough to actually get the camera to go behind a tree, and then go around.
3. The bug: As I entered a cave, the game completely blacked out. Don’t know how or why. It literally just went black. I still had the cursor and could move it around. The cave I entered was in Kessex Hills, north of the heart quest where you weaken the centaurs.