I've installed the new build on my 1520 and got annoyed by two main bugs: the first is the cellular data bug that make it un-controllable and the second was the start screen background image issue which makes it slides to left, so what did I do? I just reset my phone and these two bugs have gone.
I don't know whether some other bugs were fixed by this, try it and post the results
I don't know whether some other bugs were fixed by this, try it and post the results