I saw one from an AD that had a similar splotchy grey in it. I didn’t notice it at the time until I saw another post from someone in another forum. Then I looked back and could see it for sure.
Plus yours from 3 weeks ago. That makes 3 like that. Are you sure it wasn’t always that way? I’m not saying it should be — I’m just wondering if there’s a bad batch that may need to be replaced.