I just upgraded my vm to 2.0.12 of course because of frontend editing feature but as my shop is multilingual and there is a bug.
When in the edit window from frontend user can not change the language as the language switch is not working from frontend. I have also checked on the demo site of virtuemart the same bug I found there. The language switch function is not executing when I checked in my console window from firebug. here is the demo link below.
http://demo.virtuemart.net/index.php?option=com_virtuemart&tmpl=component&view=product&task=edit&virtuemart_product_id=21
ahh okey, thanks, we must take a look.