fix

templates/elementproperty/s/view.php

@@ -0,0 +1,16 @@
+<?php
+
+use Wt\Core\Entity\IblockElementPropertyEntity;
+use Wt\Core\Templater\Shell;
+
+/**
+ * @var $this Shell
+ * @var $elementPropertyEntity IblockElementPropertyEntity
+ */
+
+$elementPropertyEntity = $this->getContext();
+if(!$elementPropertyEntity->isMultiple()){
+    echo $elementPropertyEntity->getDisplayValue();
+} else {
+    echo implode(', ', $elementPropertyEntity->getDisplayValue());
+}