On bizarre thing that I have seen is the lyrics disappearing, but only in horizontal mode. Switch modes to vertical, and they come right back. Back to horizontal and they're gone again. Nothing less than 'Quit' and restarting (from a command line) fixed it. I can't remember exactly what I had done prior to this happening, but I had been playing with how emphatic now sits in the background, and also with the new long knob press mode change.