Has anyone else noticed that the Facebook App does strange things to the playback volume of things like music and podcasts? I spend most of my day listening to podcasts when I'm at work doing various things and if I get a Facebook notification then the volume of the podcast decreases and stays decreased until I get another notification or I pause and restart the audio. The same thing will sometime happen if I just launch Facebook. This seems to happen with any podcast app that I use. I've tried Apple's Podcast app, Downcast, and Overcast.