I got one of the Mario bundles that come with IPS screens. thing is, the top one has this weird 'distortion' at the bottom. it's not screen bleed, you can only see it under bright colors. it looks like dark spots, except they're neatly arranged one after the other, kinda like a frontlight with uneven display. it's really subtle so it's hard to take good pictures, but here: any idea what's causing it? maybe pressure on the ribbon cable? should I be worried?