It's been disabled in IE for some time, so it degrades to the old form. IE8 mostly likes the AJAX version, but the text box's z-order is broken somehow, so it shows on the page even when the form is hidden.
It's been disabled in IE for some time, so it degrades to the old form. IE8 mostly likes the AJAX version, but the text box's z-order is broken somehow, so it shows on the page even when the form is hidden.