That sounds strange, but I have seen it in other browsers. You can work around this like so.
var width = $(window).width(), height = $(window).height();
then in your resize event handler you can do.
if($(window).width() != width || $(window).height() != height){
//Do something
}
I don't know the scope of your functions and all that, but you should get the gist from this.
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