When viewing the link, scroll down to the Assessment & Scoring Capabilities bullets.
To the right there should be an image float. It's likely there the first time you view.
Now, refresh the page and it disappears. Selecting the address bar and pressing return brings it back. Also, clicking on a link to this page in a normal fashion draws it. It seems that the refresh process causes it not to render.
Safari works fine and Webkit r31114 works. r31132 and later exhibits the issue.
Created attachment 21381 [details]
Created attachment 21383 [details]
Patch (without change log and layout test)
Created attachment 21399 [details]
Comment on attachment 21399 [details]
I admit it: I was waiting for Hyatt to review.
We have to get rid of those crazy DeprecatedPtrList!
Fixed in <http://trac.webkit.org/changeset/34277>.