Duplicate posts with the behavior Masonry/Isotope

Hello !

This plugin is the only one that works with my template using Masonry.
Everything looks great except the fact that I have a double version of each post.

All my selectors are working and I use this callback :

(function($) {
var $container = $('.row'); 
$container.imagesLoaded( function() {
    $container.masonry({
        itemSelector: '.col-masonry'
    });
});
})(jQuery);

I think the problem is somewhere in the js of the plugin but I can’t find exactly what makes a double version of my post ?

Maybe someone could help me, thank you !