Last I tried (admittedly a few months back) it was still alpha-quality. I.e. the entire screen would get shuffled unpredictably, windows would end up misaligned

Last I tried (admittedly a few months back) it was still alpha-quality. I.e. the entire screen would get shuffled unpredictably, windows would end up misaligned (partly overlapping each other) etc. - nowhere near usable.