ace:showcase with the following added to web.xml
<context-param>
    <param-name>javax.faces.PARTIAL_STATE_SAVING</param-name> <param-value>false</param-value>
</context-param>
 
list > Complex Block Object
 Dragging a block causes the following console error:
 [window] [Wed, 29 Apr 2015 16:54:13 GMT] Error [status: malformedXML code: 200]: XML Parsing Error: XML or text declaration not at start of entity
 Location: http://localhost:8080/showcase/showcase.jsf
 Line Number 2, Column 19:
 <partial-response><?xml version='1.0' encoding='UTF-8'?>
 ------------------^
 <?xml version='1.0' encoding='UTF-8'?>
 <partial-response><?xml version='1.0' encoding='UTF-8'?>
 <partial-response><error><error-name>class java.lang.IllegalStateException</error-name><error-message><![CDATA[Component ID form:carList:carNameFirstList has already been found in the view. ]]></error-message></error><changes><extension aceCallbackParam="validationFailed">{"validationFailed":false}</extension></changes></partial-response>
 http://localhost:8080/showcase/javax.faces.resource/coalesced.js.jsf?ln=ice.core&dgst=4y1ej1
 Line 1
 XML5635: An XML declaration is only allowed at the beginning of the file. Line: 2, Column 21