There used to be an option on one of the phones I had to blur the background to change the focus. So a notification comes in or something other event that didn't completely take over the screen things you could see outside of that would blur, kinda like saying look at this, and looking at your screenshots in the one it looks like just the notification bar, nothing in the bar is blurred so it looks intentional. The popup looks like a focus changing background blur, have you changed themes to see if it's that theme? I'm thinking if you went back to the stock theme or tried another you wouldn't have this, because you can see it in the screenshot as well. It's really being projected intentionally. If it was something that shouldn't be happening or whatever your screenshot wouldn't show it. I think you're worried over nothing. Change the theme
