Here’s a screenshot my friend sent me. He’s running chrome on a non-retina display.
Now, I’ve gone in and replaced the image with something that centers our faces so that it looks a little better now. So the live version of this looks better now. But you can see in the screenshot that the image does not butt up against the top margin at all.
Since some of you aren’t seeing this problem, I’m beginning to think that it’s a bug.