False error notice on email/domain check

Hello,

there is a false error notice triggered on email/domain check in the sender field when the site is a subsite of a multisite with a different domain than the network domain.

Network domain: https://www.my-network-domain.com
Subsite domain: https://www.my-subsite.com

On the subsite https://www.my-subsite.com:
[email protected] will trigger an error that the email is not in the domain
[email protected] will not trigger an error

I think the error is in inc/validation-functions.php line 192

$sitename = wp_parse_url( network_home_url(), PHP_URL_HOST );

It should be

$sitename = wp_parse_url( home_url(), PHP_URL_HOST );

All the best
Christian