magento:magento2 Missed form validation in Admin Order Address Edit route sales/order/address

Author: XxXgeoXxX

app/code/Magento/Sales/Block/Adminhtml/Order/Create/Form/AbstractForm.php

@@ -240,9 +240,9 @@ private function getValidationClasses(\Magento\Customer\Api\Data\AttributeMetada
         $out = [];
         $out[] = $attribute->getFrontendClass();
 
-        $textLengthValidateClasses = $this->getTextLengthValidateClasses($attribute);
-        if (!empty($textLengthValidateClasses)) {
-            $out = array_merge($out, $textLengthValidateClasses);
+        $textClasses = $this->getTextLengthValidateClasses($attribute);
+        if (!empty($textClasses)) {
+            $out = array_merge($out, $textClasses);
         }
 
         $out = !empty($out) ? implode(' ', array_unique(array_filter($out))) : '';