Play/Pause starts playing music instead of pausing podcast
I'm having an issue with the play/pause function in IOS9. I am having this problem now that I've switched to iOS9 and iOS9.0.1. When I'm in instacast or iHeartRadio, after I press the pause button, an MP3 will start playing instead of just pausing my podcast or music. Also when I press play, the music pauses and does not play my podcast. This also occurs on the swipe up screen with all of the controls on it.
If I reboot my phone, the proper functionality is restored for a while but not permanently. I'm not sure what specific event causes it to behave improperly again.
This is on my iPhone 5S.
iPhone 5s, iOS 9.0.1