footer.php
$(window).load(function(){ replace with $(window).on(function(){
Hi
It looks like you're using old version of Purity III template as we updated this already 🙂
I see only version 2.0.2 (which has this "bug"). Another small problem - when I click megamenu configuration -> Icons site is not found (Font-Awesome changed address)
I realize that it's fixed but not released yet, it will be updated in the next version of Purity III template 🙂