if I choose size and color and then press "add to cart", then I get redirected to product detail page with message "You need to choose options for your item."
It should be added to cart, like for simple products here (http://magento2-demo.nexcess.net/gear/watches.html), right ?
Is this a bug for configurable products ?
Go to Solution.
It is a bug, report it in the issue tracker: https://github.com/magento/magento2/issues