diff --git a/src/core/widget.js b/src/core/widget.js
index 1e76a8ffe..fc6d28957 100644
--- a/src/core/widget.js
+++ b/src/core/widget.js
@@ -610,7 +610,10 @@
                 if (o.element) {
                     return BI.$(o.element);
                 }
-                return BI.$(document.createElement(o.tagName));
+                if (o.tagName) {
+                    return BI.$(document.createElement(o.tagName));
+                }
+                return BI.$(document.createDocumentFragment());
             }
             return BI.$(widget);
         },