Found a consistent micro-noise pattern in AI-generated flat images

Found what looks like the consistent micro-noise pattern in AI-generated flat images I was messing around generating completely flat gray images, just, no texture, no lighting, nothing at all, and then I pushed the curves hard to see if anything shows up I did this twice with the exact same prompt, and after boosting it, a really subtle pattern appears, not just random grain but something that feels a bit structured.