Edit and Delete links do not appear if the display is changed from default

If the display format for the date field is modified to anything other than 'default' then the edit and delete links are not displayed.

It appears that the hook_theme_registry_alter function only overrides the settings for date_formatter_default.

function date_repeat_instance_theme_registry_alter(&$registry) {
  // Override theme function which display date combinations.
  $registry['date_formatter_default']['path'] = drupal_get_path('module', 'date_repeat_instance');
  $registry['date_formatter_default']['file'] = 'date_repeat_instance.theme';
  $registry['date_formatter_default']['function'] = 'theme_date_repeat_instance_date_display_combination';
}

If I change the display to the long format, I have to replace date_formatter_default with date_formatter_long for the theme override to occur.

I'm not sure if #1369002: Where do the edit and delete links appear? is also due to this since that issue is for D7.