IE 9 is behaving quite strangely for me. I\'ve got a page font-size changing control that saves the users setting and then in the document ready sets the body font-size to
Seems IE9 issue. As a workaround, you can refresh the font-size css of select.
if(jQuery.browser.msie) $("select").css("font-size", "1em")
Example. http://jsfiddle.net/z6Paz/16/