Views entity field raw property is always empty

I've found the same issue after a few years, showing fields from Search API, I need to check by the raw value and it is empty.

Here's the workaround I'm using:

function mytheme_preprocess_views_view_fields(&$variables) {
  $view = $variables['view'];
  if ($view->id() == 'view_id' && $view->current_display == 'display_name') {
    foreach ($view->field as $id => $field) {
      $items = $view->field[$id]->getItems($variables['row']);
      if (!empty($items)) {
        $item = reset($items);
        if (isset($item['raw'])) {
          $variables['fields'][$id]->raw = $item['raw'] ?: NULL;
        }
      }
    }
  }
}

I've tried the patches here but no dice. I'll be happy to help if there's any direction to pull from :)