ACP2E-1514: Front-end re-order function applies same backend custom price

implemented solution

Author: aplapana

app/code/Magento/Sales/Model/Reorder/Reorder.php

@@ -9,19 +9,20 @@
 use Magento\Catalog\Api\Data\ProductInterface;
 use Magento\Catalog\Model\Product;
 use Magento\Catalog\Model\ResourceModel\Product\Collection;
+use Magento\Catalog\Model\ResourceModel\Product\CollectionFactory as ProductCollectionFactory;
+use Magento\Framework\DataObject;
 use Magento\Framework\Exception\InputException;
 use Magento\Framework\Exception\NoSuchEntityException;
 use Magento\Quote\Api\CartRepositoryInterface;
 use Magento\Quote\Api\Data\CartInterface;
 use Magento\Quote\Model\Cart\CustomerCartResolver;
-use Magento\Quote\Model\Quote;
 use Magento\Quote\Model\GuestCart\GuestCartResolver;
+use Magento\Quote\Model\Quote;
 use Magento\Sales\Api\Data\OrderItemInterface;
 use Magento\Sales\Helper\Reorder as ReorderHelper;
 use Magento\Sales\Model\Order\Item;
 use Magento\Sales\Model\OrderFactory;
 use Magento\Sales\Model\ResourceModel\Order\Item\Collection as ItemCollection;
-use Magento\Catalog\Model\ResourceModel\Product\CollectionFactory as ProductCollectionFactory;
 use Psr\Log\LoggerInterface;
 
 /**
@@ -30,6 +31,11 @@
  */
 class Reorder
 {
+    /**
+     * Forbidden reorder item properties
+     */
+    private const FORBIDDEN_REORDER_PROPERTIES = ['custom_price'];
+
     /**#@+
      * Error message codes
      */
@@ -253,6 +259,7 @@ private function getOrderProducts(string $storeId, array $orderItemProductIds):
     private function addItemToCart(OrderItemInterface $orderItem, Quote $cart, ProductInterface $product): void
     {
         $infoBuyRequest = $this->orderInfoBuyRequestGetter->getInfoBuyRequest($orderItem);
+        $this->sanitizeBuyRequest($infoBuyRequest);
 
         $addProductResult = null;
         try {
@@ -273,6 +280,21 @@ private function addItemToCart(OrderItemInterface $orderItem, Quote $cart, Produ
         }
     }
 
+    /**
+     * Removes forbidden reorder item properties
+     *
+     * @param DataObject $dataObject
+     * @return void
+     */
+    private function sanitizeBuyRequest(DataObject $dataObject): void
+    {
+        foreach (self::FORBIDDEN_REORDER_PROPERTIES as $forbiddenProp) {
+            if ($dataObject->hasData($forbiddenProp)) {
+                $dataObject->unsetData($forbiddenProp);
+            }
+        }
+    }
+
     /**
      * Add order line item error
      *