I have some problems matching this message in my WordPress network update page:
You have the latest version of WordPress. Future security updates will be applied automatically. If you need to re-install version 4.9.4, you can do so here:
With the one I just noticed after temporarily enabling debug mode:
Notice: wpdb::escape is deprecated since version 3.6.0! Use wpdb::prepare() or esc_sql() instead. in /home/user/public_html/blog.network/wp-includes/functions.php on line 3846
Notice: get_current_site_name is deprecated since version 3.9.0! Use get_current_site() instead. in /home/user/public_html/blog.network/wp-includes/functions.php on line 3846
What am I missing? How can core WordPress code still use code that its very own developers marked as deprecated? How can I update functions.php file in wp-includes to not use deprecated code and methods?