Ok guys, unfortunately I don’t think this is a problem with the theme, but more a problem with the WooCommerce function that provides this AJAX functionality, or WPML. I’ve spent a lot of time trying to work around it, but it seems that the request is cached, so you get back the same response for the last time it updated (which will be in whatever language you have it set to first).
Can someone please raise the issue with either plugin, as this is a plugin issue. If you get a response that we can implement, then we’ll be more than happy to do so.
– Ed