Issue #2907828 by Sweetchuck: ProductForm class in #attributes should be an array

Author: Sweetchuck

modules/product/src/Form/ProductForm.php

@@ -114,7 +114,7 @@ public function form(array $form, FormStateInterface $form_state) {
         '#value' => $product->isPublished() ? $this->t('Published') : $this->t('Not published'),
         '#access' => !$product->isNew(),
         '#attributes' => [
-          'class' => 'entity-meta__title',
+          'class' => ['entity-meta__title'],
         ],
       ],
       'changed' => [