Whenever I select a track, it plays, but never advances to the next track. If I select play on an album or playlist, it plays the first track and stops. My files are all in FLAC if that's pertinent. Happens regardless of local wifi, remote wifi, or mobile network.
Web client via mobile Safari doesn't have this issue, nor do any desktop browsers.
iPhone 5S, iOS 9.3.3
App v1.2.1, but this has been happening for a few months now