Clicking some links doesn't prevent default events (aka, it follows the link)

[daraosn]

1. go to Facebook.com
2. click on any footer link (i.e. Sign up or Help)
3. iframe renders {"message":"Forbidden"}

[timqian]

This bug looks wired, the signup link on https://facebook.com looks like a normal <a/> but no method below prevents the default event

e.preventDefault();
e.stopImmediatePropagation();
e.stopPropagation();