Adding secondary tabs in user profile hides Edit button

I was extending the user profile to have more menu items. Meaning that I wanted tabs to filter a user view. So I added menu items in my module's hook_menu:

 $items['user/%user/view/extprofile'] = array(
    'title' => 'For Friends',
    'page callback' => 'extprofile_view_filtered',
    'page arguments' => array(1, 'for_friends'),
    'access callback' => 'user_view_access',
    'access arguments' => array(1),
    'type' => MENU_DEFAULT_LOCAL_TASK,
    'weight' => -1,
    'file' => 'extprofile.pages.inc',
  );
  
  $items['user/%user/view/extprofile_private'] = array(
    'title' => 'Private',
    'page callback' => 'extprofile_view_filtered',
    'page arguments' => array(1, 'private'),
    'access callback' => 'user_view_access',
    'access arguments' => array(1),
    'type' => MENU_LOCAL_TASK,
    'weight' => 2,
    'file' => 'extprofile.pages.inc',
  );

Now rebuild menus. The two tabs appear underneath View tab in the user profile. However, when I press Private the Edit menu on the top disappears. As far as I found out this is due to the fact how user_category_load is implemented. Here is the function in from user.module:

function user_category_load($uid, &$map, $index) {
  static $user_categories, $accounts;

  // Cache $account - this load function will get called for each profile tab.
  if (!isset($accounts[$uid])) {
    $accounts[$uid] = user_load($uid);
  }
  $valid = TRUE;
  if ($account = $accounts[$uid]) { // <<<<================================
    // Since the path is like user/%/edit/category_name, the category name will
    // be at a position 2 beyond the index corresponding to the % wildcard.
    $category_index = $index + 2;
    // Valid categories may contain slashes, and hence need to be imploded.
    $category_path = implode('/', array_slice($map, $category_index));
    if ($category_path) {
      // Check that the requested category exists.
      $valid = FALSE;
      if (!isset($user_categories)) {
        $empty_account = new stdClass();
        $user_categories = _user_categories($empty_account);
      }
      foreach ($user_categories as $category) {
        if ($category['name'] == $category_path) {
          $valid = TRUE;
          // Truncate the map array in case the category name had slashes.
          $map = array_slice($map, 0, $category_index);
          // Assign the imploded category name to the last map element.
          $map[$category_index] = $category_path;
          break;
        }
      }
    }
  }
  return $valid ? $account : FALSE;
}

I marked the line where I think the problem is. The code there is actually always expecting paths of the given form user/%/edit/category_name but my path is a user/%user/view/extprofile_private and of course there is no such category "extprofile_private". So how I solved the problem my problem was to change the marked line into:

...
if (($account = $accounts[$uid]) && $map[0] == 'user' && $map[1] == $index && $map[2] == 'edit') {
...