MAGETWO-84688: [backport 2.1] Attribute category_ids issue #11389 #11807

 - Merge Pull Request #11807 from manuelson/magento2:feature/11341_backport
 - Merged commits:
   1. 4e24f73

Author: orlangur

app/code/Magento/Catalog/Block/Product/View/Attributes.php

@@ -81,8 +81,9 @@ public function getAdditionalData(array $excludeAttr = [])
         $attributes = $product->getAttributes();
         foreach ($attributes as $attribute) {
             if ($attribute->getIsVisibleOnFront() && !in_array($attribute->getAttributeCode(), $excludeAttr)) {
-                $value = $attribute->getFrontend()->getValue($product);
-
+                if (is_array($value = $attribute->getFrontend()->getValue($product))) {
+                    continue;
+                }
                 if (!$product->hasData($attribute->getAttributeCode())) {
                     $value = __('N/A');
                 } elseif ((string)$value == '') {