Table rates shipping price should consider discounts

Table rate shipping does not factor in discounted price of items

If we set Table rate rule based on certain amount and there is a discount coupon applied shipping rule uses regular price instead of price in shopping cart for applying the rule for table rate based on price of product.

If I offer free shipping above 300 and my products costs 350 and there is a coupon code of 50% Table rate will show free shipping option.

Sincerely
Josip