The Apple start page fails to render properly because the XSSAuditor blocks loading content with respect to the specified HTML Base element. Notice the first seven characters of the src property of the HTML Base element is "http://" which is clearly in the page URL.
Frown. Let's revert the 7 character change while we think about these cases.
This issue also effects XSSAuditor::canLoadObject, and XSSAuditor::canEvaluateJavaScriptURL.
Dan rolled out the offending patch.