If this isn't resolved it will be the one thing stopping me from purchasing Poweramp. I use a media player every day on the tube and if it's going to suddenly start asking me to connect to the internet when i'm 30m underground it can take a hike. Lol at the possibility of paying for the app and then having to use a pirated version to get round a license issue Fix up devs!
The 'tap on a song' rules should be differentiated for the play queue and lists. If I have it set up to add a song from a list/the library to the play queue when I tap it, it is highly unlikely that when I tap the song in the play queue that I want to add it to the play queue again. The play queue should act as a current playlist, where a tap = play now, not a list of songs.