Along with the previous thing about the volume controls, still having problems with a bug I also had in the old fennec versions. Occasionally the browser gets stuck in pinch-to-zoom, and won't scroll the page at all. Haven't found a way out of this other than closing the browser. This doesn't happen very often that I've seen, but it's annoying when it does.

Still, this is already replacing the stock browser for many things for me. Pretty good, that, considering the version number!