New IPad Pro 13 1tb nano glass, horizontal black line OOTB

Brand new iPad Pro 13 with Nano glass if that matters, has a persistent horizontal faint black line across the full screen. It is perfectly aligned with the two black “side marks” just below the speakers on each side of the iPad. The line perfectly aligns with these side marks in the case as if it was manufactured that way on purpose. If this a design intent and what is its function? It will be hard to catch a pic of as the screen needs to be back and tilted to see it best, but a bit annoying nonetheless. It does appear on all white screen too as a white line. The picture included has blue lines directly above and below the white line if you can tilt your screen and look closely. Didn’t find anything on it easily so thought I’d start a thread.