I came to a deafening realization today. All of a sudden, my music was painfully loud. It seems that the media volume slider in the pull down status bar menu doesn't directly follow the actual media volume. I assume that when the menu is pulled down and QUICK SETTINGS is selected, that action polls Android and is given a current volume setting and that's where the slider starts.
What I've noticed is that once the menu is pulled down, adjusting volume using the volume buttons on the side of the phone has NO affect on the slider as seen by the attached image. I can turn the volume all the way down so you can't hear a thing, and the slider can still show 75% volume. Moving the slider however does change the media volume and by doing so, everything is back in sync.
Is there a way to create a real time sync between the slider and the media volume? If you close the menu and re-open, everything is back in sync which makes me think that the slider only polls for the actual volume setting upon opening. Is there a way to send changes to the media volume by the buttons to the slider?