edit

app/shop/lib/Refund.php

@@ -502,7 +502,7 @@ class Refund
         if (isset($data['parent_type']) && $data['parent_type'] > 1) {
             return;
         }
-        if (isset($info['cash'] > 0)) {
+        if ($info['cash'] > 0) {
             return;
         }
         $refund_cash = $info['cash'];