checkout page on theme divi (elegant themes)

Hi,
I have a problem on the woocommerce checkout-page.

if a customer forget to fill a subject like name or town, the page scroll complete to far to the top. Some of the messages are therefore not visible.
How can I change that? Elegant Themes told me its a WooCommerce problem.
You can check it on https://testshop.seowebb.de. So far its only a demo site.

Thanks