Can I ask what browser are you using?
I am using Google Chrome 52.0.2743.116 m (64bit), this is the latest version available for me.
When taking that screenshot I was using Firefox 48.0. I have also tested it on Google Chrome Version 37.0.2062.120 and the ad shows correctly while not logged in as a newbie and logged out, in addition to Chrome on Android where the font size is also correct (though the ad is broken regardless).