There is another bug, visitors are NOT able to select language/country in the footer of an embedded shop. (eventhough mutli-language is set) Check: http://www.rock-biker.nl/index.php/webshop
I’m having a similar language problem. I’ve currently got a web developer building a site for me and when they use the integrated shop it is in German when the shop is set to UK and English. The site is currently on a dev server so I can’t post links unfortunately.
I have shops on both the .com and .co.uk domains. The .com is set to English and $ in the partner shop dashboard and displays correctly. The .co.uk is set to English and £ but is displaying on our test server in German and Euro