Browser not picking the correct image srcset

Hi guys,

Since WP4.4 our product images have changed of ratio. They used to be square and are now loading a cropped image. I’m really not sure what is going on and even after reading the official WP post (https://make.wordpress.org/core/2015/11/10/responsive-images-in-wordpress-4-4/) it is still unclear to me how to fix this.

Here’s a link to one of our product : http://goo.gl/zhzIV9

Any help would be appreciated.

Thanks!

https://wordpress.org/plugins/woocommerce/