Expected results: the "Second option" radio button should be checked.
References: defaultChecked
of type boolean: When type has the value 'radio' or 'checkbox', this
represents the HTML checked attribute of the element.
coming from
DOM 1 HTML Interface HTMLInputElement, defaultChecked attribute and
coming from DOM 2 HTML
Interface HTMLInputElement, defaultChecked attribute.
This bug has been reported at connect's IE beta feedback as bug 339083