MC-22972: Credit memo without refunded shipment produces the negative Grand Total

Author: nikita-shcherbatykh

app/code/Magento/Sales/Model/Order/Creditmemo/Total/Tax.php

@@ -41,7 +41,7 @@ public function collect(\Magento\Sales\Model\Order\Creditmemo $creditmemo)
             $baseOrderItemTax = (double)$orderItem->getBaseTaxInvoiced();
             $orderItemQty = (double)$orderItem->getQtyInvoiced();
 
-            if ($orderItemTax && $orderItemQty) {
+            if ($orderItemQty) {
                 /**
                  * Check item tax amount
                  */