If people have the double fielts problem as well- the below trick fixed it for me…
Just for your information:
After updating Woocommerce and this plugin to the latest version, try checking the overridden template ‘single-product/add-to-cart/variable.php’. In my case, I had to update this template to remove (or comment) calling of these actions:
It appears that Woocommerce now adds those calls someplace else already, probably when rendering the actual cart button as part of action woocommerce_single_variation
