You’re right, Punisher28, with more than one line of second-submenu items the line gets distorted; thanks for noting this! Please try this fix (again, upload it into the theme folder) and let me know if it works.
Best,
Andrew / Satori Studio
Deprecated: Function get_currentuserinfo is deprecated since version 4.5.0! Use wp_get_current_user() instead. in /var/www/html/wp-includes/functions.php on line 5383