title: SoapUI groovy script displays popup where it shouldn't
body: <p>I need to format some xml in the groovy script in SoapUI. I'm using method <code>groovy.xml.XmlUtil.serialize(xmlString)</code></p>
  
  <p>According to the <a href="http://docs.groovy-lang.org/latest/html/api/groovy/xml/XmlUtil.html#serialize-java.lang.String-" rel="nofollow noreferrer">javadoc</a>, this static method should return formatted String. But the SoapUI also displays a popup window with the formatted String. Is there some way I can prevent that? I have no idea why this happens. </p>
  
  <p><a href="https://i.stack.imgur.com/w6iKJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/w6iKJ.png" alt="enter image description here"></a></p>
  
  <ul>
  <li>SoapUI version 5.4.0 on Linux</li>
  </ul>