ENGCOM-3361: #17638: [Forwardport] Bundle Special Prices not correctly rounded. #18987

 - Merge Pull Request #18987 from p-bystritsky/magento2:ISSUE-17638
 - Merged commits:
   1. fe82167

Author: magento-engcom-team

app/code/Magento/Catalog/Ui/DataProvider/Product/Form/Modifier/Eav.php

@@ -11,6 +11,7 @@
 use Magento\Catalog\Model\Attribute\ScopeOverriddenValue;
 use Magento\Catalog\Model\Locator\LocatorInterface;
 use Magento\Catalog\Model\Product;
+use Magento\Catalog\Model\Product\Type as ProductType;
 use Magento\Catalog\Model\ResourceModel\Eav\Attribute as EavAttribute;
 use Magento\Catalog\Model\ResourceModel\Eav\AttributeFactory as EavAttributeFactory;
 use Magento\Catalog\Ui\DataProvider\CatalogEavValidationRules;
@@ -419,7 +420,7 @@ public function modifyData(array $data)
 
             foreach ($attributes as $attribute) {
                 if (null !== ($attributeValue = $this->setupAttributeData($attribute))) {
-                    if ($attribute->getFrontendInput() === 'price' && is_scalar($attributeValue)) {
+                    if ($this->isPriceAttribute($attribute, $attributeValue)) {
                         $attributeValue = $this->formatPrice($attributeValue);
                     }
                     $data[$productId][self::DATA_SOURCE_DEFAULT][$attribute->getAttributeCode()] = $attributeValue;
@@ -430,6 +431,32 @@ public function modifyData(array $data)
         return $data;
     }
 
+    /**
+     * Obtain if given attribute is a price
+     *
+     * @param \Magento\Catalog\Api\Data\ProductAttributeInterface $attribute
+     * @param string|integer $attributeValue
+     * @return bool
+     */
+    private function isPriceAttribute(ProductAttributeInterface $attribute, $attributeValue)
+    {
+        return $attribute->getFrontendInput() === 'price'
+            && is_scalar($attributeValue)
+            && !$this->isBundleSpecialPrice($attribute);
+    }
+
+    /**
+     * Obtain if current product is bundle and given attribute is special_price
+     *
+     * @param \Magento\Catalog\Api\Data\ProductAttributeInterface $attribute
+     * @return bool
+     */
+    private function isBundleSpecialPrice(ProductAttributeInterface $attribute)
+    {
+        return $this->locator->getProduct()->getTypeId() === ProductType::TYPE_BUNDLE
+            && $attribute->getAttributeCode() === ProductAttributeInterface::CODE_SPECIAL_PRICE;
+    }
+
     /**
      * Resolve data persistence
      *