Hello James,
Thank’s for your message.
The website has a few product with two attributes (size + color). The translation of the product is handle by qTranslate.
When I set the stock managment at a product level, the plugin is working perfectly.
But when I set the stock managment at a variation level, i can override the quantity on the cart page without alert message.
The website use qtranslate on template’s files, so when i tried to disabled it, I have some errors.
I will try modify this behavior to test if the problem is linked with qtranslate.
Regards,