Normal direction relation not showing, when reverse direction is also needed.

Use case: while using this module in ERPAL, I'm trying to create new relationship for having ownership of an organization. Individual and organizations may have ownership in any organizations, so relationship [Label: "Owner of"; Directional = 'checked'; Reverse label: "Owned by"; Unique = 'checked'; Source contact types = 'Any' (All CRM Core Contact bundles); Destination contact types = 'Organization'] was created and some additional fields (like sharecapital in EUR) were added.

While "Add a relationship" for a specific contact:
Relationship 'Owner of' works as designed for individual: can create ownership in any organization.

Relationship 'Owned by' works as designed for organizations: can create owner (individual or organization).
Relationship 'Owner of' do not show up.

During research it was found, that CRM Core module's file 'crm_core_relationship_ui.pages.inc' overwrites existing $relationship_types (line 195), while doing foreach (line 188).

    foreach (array(0, 1) as $reverse) {
      $relationship_types = crm_core_relationship_load_relationship_types($contact->type, $reverse);
      foreach ($relationship_types as $relationship_type) {
        if (user_access('create relation entities of bundle ' . $relationship_type->relation_type) || user_access('create relation entities of any contact relationship')) {
          $contact_uri = $contact->uri();
          $href = $contact_uri['path'] . '/relationships/add/' . $relationship_type->relation_type . '/' . $reverse;
          $title = $reverse ? $relationship_type->reverse_label : $relationship_type->label;
          $relationship_type_links[$relationship_type->relation_type] = array(
            'title' => $title,
            'href' => $href,
            'localized_options' => array(),
            'description' => t('Create %kind relationship.', array('%kind' => $title)),
          );
        }
      }
    }

Problem was solved, when I added '$reverse' value to $relationship_type_links array key:
$relationship_type_links[$relationship_type->relation_type . '_' . $reverse] = array(

Maybe it is working as designed, but in my case I had to change this line.
It's my first created issue, so sorry for any mistake.