Did you somehow take that photo with another camera?
If that's a True screenshot, And the 'burn-in' shows up on it, then that means there's something else fishy going on and something eyes the culprit, as burn-in is physical, and is only impacts hardware.... It should never show on a screen shot....
That would be like. Fly landing on your screen and you being able to screenshot the fly to show us...
Odd...
Posted via my Nokia 8210 from the inside of a Kitten.