Form field help text not showing up

This hook solves the issue in our project for now. It is not my code but I think it will help solving this issue and might also help other community members as workaround :)

Do not forget to replace YOUR_MODULE and YOUR_NODE_TYPE.

/**
 * Implements hook_form_BASE_FORM_ID_alter().
 */
function YOUR_MODULE_form_node_form_alter(&$form, &$form_state, $form_id) {
  $field_definitions = Drupal::entityManager()->getFieldDefinitions('node', 'YOUR_NODE_TYPE');
  foreach ($field_definitions as $fieldname => $field) {
    if ($field->getType() == 'entity_reference') {
      // @todo: This is the brute force attempt to fix missing descriptions on IEF widgets.
      $description = $field->getDescription();
      if (!empty($description) && !isset($form[$fieldname]['widget']['#description'])) {
        $form[$fieldname]['widget']['#description'] = $description;
      }
    }
  }
}

Edit: Sorry, really got no time this week to create a patch :)