Hm that's a little unfortunate. I took a peek just now and I do see the issue, after some quick changes. It seems to be only visible at certain screen resolutions/browser scaling. I typically browse the site at 90% scaling, which makes everything fit better and look better for me, and it tends to solve a lot of these placement issues.
I'll report this one to the ad guys though and see if we can get it corrected. Thanks for the heads up!