Issue fixed #20128 : Date range returns same start and end date

Author: milindsingh

app/code/Magento/Reports/Model/ResourceModel/Order/Collection.php

@@ -445,7 +445,7 @@ public function getDateRange($range, $customStart, $customEnd, $returnObjects =
                 break;
 
             case 'custom':
-                $dateStart = $customStart ? $customStart : $dateEnd;
+                $dateStart = $customStart ? $customStart : $dateStart;
                 $dateEnd = $customEnd ? $customEnd : $dateEnd;
                 break;