Do we miss explode() calls for fences_field_classes, fences_label_classes, fences_field_items_wrapper_classes

Yea, that part also doesn't make much sense, as we already received the classes anyway. We basically add them again.

Yeah looks totally correct, additionally I think we need to also explode in
https://git.drupalcode.org/issue/fences-3464644/-/blob/3464644-add-a-mul...

    $vars['field_items_wrapper_attributes'] = new Attribute();
    if (!empty($fences_config['fences_field_items_wrapper_classes'])) {
      $vars['field_items_wrapper_attributes']->addClass($fences_config['fences_field_items_wrapper_classes']);
    }

Then we should have them all?

All done, please review! I did it in the Web-IDE, but don't think there are any errors.

Great, tests are green and looks good to me!

Automatically closed - issue fixed for 2 weeks with no activity.