Audio playback issues - Pandora Skill

Hi folks.
I am struggling with an odd issue with my Picroft setup. When I ask Mycroft to play pandora (for example), it works, and will play 1 song, then go quiet. If I ask it to play pandora again, it will do the same-- give me only one song. The weird thing is, that if I ask Mycroft to do something else immediately after the song ends (like raise the volume), then it will play another song. It’s like a song gets queued and needs another ‘trigger’ to play it. Similar weird things happen with other skills, but it’s especially maddening to have to ask for another song every time.
Does anyone have any suggestions?