Applying coupons via URL fails if coupon is restricted to certain products or ca

Applying coupons via URL fails if coupon is restricted to certain products or categories.

Steps to duplicate:

Create a standard Woocommerce coupon which is restricted to apply only to certain products (or categories).
Add one of these products to cart and apply the coupon manually – works fine, as expected.

Apply coupon via URL, then add one of the qualifying products to cart – coupon does NOT get applied – error message about products not meeting coupon requirements.
If product is added to cart first, then coupon applied via URL – coupon applied correctly, as expected.

Remove product or category restriction from coupon.
Apply coupon via URL, then add the product in question to cart – coupon applied correctly, as expected.

There appears to be an issue with applying coupon via URL first and then checking restrictions.