I've been experiencing this same thing. I mostly notice this after the machine has been in sleep mode ( app open playing before sleep mode. playback paused, machine put to sleep. when the machine is brought back up - when I start pandora playing, it often gets in this mode ). i close & restart the app and it works fine - until I sleep again. I did the 'app data reset above' to see i this fixes it..... just sharing - because i too would like a fix here....
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