Jquery Masonry height issue
Seems you already use the reload.Maybe its because the images reload on URL refresh and not on reload.
Try:
var $container = $('#media_list');$container.imagesLoaded(function(){ $container.masonry({ itemSelector : '.media_item', columnWidth : 300, gutterWidth: 20 });});otherwise
$('#media_list').masonry({ // options itemSelector : '.media_item', columnWidth : 300, gutterWidth: 20}).masonry('reload');
For a better compatibility with Google Chrome for example, change
var $container = $('#media_list');to
$(window).load(function(){ $('#media_list').masonry(); });