Coupon Applying Twice

Hello,

I was just testing some coupon codes and have noticed the coupon discounts seem to be applying twice. I will add some screenshots from the latest test. Steps taken were choose to pay for £96 listing, apply coupon for £19.20, system takes me back to the listing page and says discount applied. I have to click on make payment again and the directory screen shows the listing fee minus the discount (76.80) when I click paynow the discount gets applied again and the paypal amount shows as £57.60.

I’m not sure if this is happening because the system takes me back and then makes me click pay now again, but I’m not sure how to stop it doing that. Can anyone please help?

Thank you

Charlotte