I had an issue where my lockscreen music controls for ShadowRom and Sapphire were not working. I figured it was one of my apps interfering with this feature so after hours of uninstalling and installing every app I found that Stitcher Radio was the cause. If you are having the same problem then try deleting Stitcher if you have it. I love Stitcher so if anyone knows a way to fix this without deleting it then please let me know. Otherwise suggestions for other podcast apps will be helpful.