proxy not working for admin edit.php links

Thank you in advance – here is an example of my issue:
I have a subdomain media.abc.com. I set up a proxy server so that the user will see the site as abc.com/media
in wp-config I set up

/** Site URL */
define( 'WP_HOME', 'https://www.abc.com/media' );
define( 'WP_SITEURL', 'https://www.abc.com/media' );

$_SERVER['REQUEST_URI'] = str_replace("/wp-admin/", "/media/wp-admin/",  $_SERVER['REQUEST_URI']);

The only link that doesn’t work properly is the link in admin to next pages and next posts on the bottom of those pages. Those links start at: https://media.abc.com/media/wp-admin/edit.php?… INSTEAD OF https://www.abc.com/media. It is not affected by site url setting changes which we set up. Then this link refreshes to https://media.abc.com/media/wp-admin/edit.php?… and then the page is not found.
What do you recommend?

• This topic was modified 3 years, 3 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Developing with WordPress topic

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