I updated my iTunes yesterday, along with Lion, as did alot of other people. Now I've been experiencing some weird behaviour.

I have my iTunes setup like above. I usually browse to artist by typing the first few letters of their name, and the list jumps down to the results. It still does that. However, when I scroll the list afterwards it jumps to the very top of the list, regardless of scroll direction.
Have anyone experience similar problems? And if so, how have you solved it?
Edit: Problem has been solved in the new iTunes 10.5.1