MAGETWO-86308: magento/magento2#12209: Substitution payment method - Incorrect message #12731

 - Merge Pull Request magento/magento2#12731 from zamoroka/magento2:issue/12209
 - Merged commits:
   1. 30b8293b

app/code/Magento/Payment/view/adminhtml/templates/info/substitution.phtml

@@ -10,6 +10,8 @@
  */
 ?>
 <div>
-    <?php $block->escapeHtml($block->getMethod()->getTitle());?>
+    <?= $block->getMethod()->getTitle()
+        ? $block->escapeHtml($block->getMethod()->getTitle())
+        : $block->escapeHtml(__('Payment method')); ?>
     <?= $block->escapeHtml(__(' is not available. You still can process offline actions.')) ?>
 </div>