K, two things first, those who are having issues with pics showing on apps, xda app, flipboard, be sure to uncheck force GPU rendering in developer settings. Second, those that claim you can't control vol, I say placebo effect. I played a YouTube bid, I turned down all the way up then slowly down. I noticed a difference while turning it down.
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Honestly I really wish it was a placebo effect. It appears to only happen with music apps for me. Try playing two songs with google music with headphones and it will become instantly noticeable.