I've recently decided to try out Poweramp, since I heard good things about it. However, the one important feature for me is the ability to sort by Album Artist, since I know of only one other player that does this. After downloading the beta v3 version and finally locating the option necessary, I was surprised (to say the least) that it does not seem to be working. While artist and album fields work fine, album artist yields exactly... zero results. Any idea what might cause this? Shouldn't be the tags, these work and display correctly both on my PC and on another Android music player.