BUG#AC-8227: Tax Class set to None when creating new configurable variations in multi store mode

Author: glo80326

app/code/Magento/ConfigurableProduct/Model/Product/VariationHandler.php

@@ -7,16 +7,16 @@
 
 namespace Magento\ConfigurableProduct\Model\Product;
 
-use Magento\Catalog\Model\Product\Attribute\Source\Status;
 use Magento\Catalog\Model\Product\Type as ProductType;
 use Magento\Framework\Exception\LocalizedException;
+use Magento\Framework\ObjectManager\ResetAfterRequestInterface;
 
 /**
  * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  * @api
  * @since 100.0.2
  */
-class VariationHandler
+class VariationHandler implements ResetAfterRequestInterface
 {
     /**
      * @var \Magento\Catalog\Model\Product\Gallery\Processor
@@ -52,7 +52,7 @@ class VariationHandler
     /**
      * @var \Magento\CatalogInventory\Api\StockConfigurationInterface
      * @deprecated 100.1.0
-     * @see MAGETWO-71174
+     * @see MSI
      */
     protected $stockConfiguration;
 
@@ -121,7 +121,7 @@ public function generateSimpleProducts($parentProduct, $productsData)
      * Prepare attribute set comprising all selected configurable attributes
      *
      * @deprecated 100.1.0
-     * @see MAGETWO-71174
+     * @see prepareAttributeSet()
      * @param \Magento\Catalog\Model\Product $product
      * @return void
      */
@@ -205,6 +205,7 @@ protected function fillSimpleProductData(
                 $parentProduct->getData($attribute->getAttributeCode()) ?? $attribute->getDefaultValue()
             );
         }
+
         $keysFilter = ['item_id', 'product_id', 'stock_id', 'type_id', 'website_id'];
         $postData['stock_data'] = array_diff_key((array)$parentProduct->getStockData(), array_flip($keysFilter));
         $stockStatus = $parentProduct->getQuantityAndStockStatus();
@@ -213,7 +214,9 @@ protected function fillSimpleProductData(
         }
 
         $postData = $this->processMediaGallery($product, $postData);
-        $postData['status'] = $postData['status'] ?? Status::STATUS_ENABLED;
+        $postData['status'] = isset($postData['status'])
+            ? $postData['status']
+            : \Magento\Catalog\Model\Product\Attribute\Source\Status::STATUS_ENABLED;
         $product->addData(
             $postData
         )->setWebsiteIds(
@@ -300,4 +303,12 @@ function ($image) {
         }
         return $productData;
     }
+
+    /**
+     * @inheritDoc
+     */
+    public function _resetState(): void
+    {
+        $this->attributes = [];
+    }
 }