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Seems normal to me, do you have any yellow zones or bleeding, and is your bottom brighter than the top of the screen?
 
It has nothing to do with the parallax/motion thing and there are no yellow spots or bleeding.
It's like the glass at top of the screen is thicker than on the rest of it, and so the image is appearing to form "under" it, not on the surface. Just look at this picture and you will see what I mean ( http://i.imgur.com/Tgyx0ru.jpg ).
 
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