NPE on ExceptionBean when processing SOAP Fault

FULL PRODUCT VERSION :
d:\Fusion\test\ionBaseApp\ionTest>d:\Java\jdk1.7.0_161\bin\java -version
java version "1.7.0_161"
Java(TM) SE Runtime Environment (build 1.7.0_161-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.161-b13, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
All OSs

A DESCRIPTION OF THE PROBLEM :
The response of a web service is as below... This is a web service created on Oracle SOA Suite in BPEL...

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
   <soap:Body xmlns:tns="http://www.esri.com/schemas/ArcGIS/10.1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
      <tns:Fault xmlns:my="urn:myNamespace" xmlns:tns="http://schemas.xmlsoap.org/soap/envelope/">
         <faultcode>tns:Client</faultcode>
         <faultstring>Not found - parcel_key = 283458</faultstring>
         <detail>
            <exception>this is my exception</exception>
         </detail>
      </tns:Fault>
   </soap:Body>
</soapenv:Envelope>

When processing SOAPFault JDK 1.7 fails with NPE... the NPE is unexpected...

d:\Fusion\test\ionBaseApp\ionTest>d:\Java\jdk1.7.0_161\bin\java -cp classes cogc.test.Class1
Exception in thread "main" javax.xml.ws.WebServiceException: java.lang.NullPointerException
        at com.sun.xml.internal.ws.client.dispatch.DispatchImpl.doInvoke(DispatchImpl.java:196)
        at com.sun.xml.internal.ws.client.dispatch.DispatchImpl.invoke(DispatchImpl.java:203)
        at cogc.test.Class1.main(Class1.java:94)
Caused by: java.lang.NullPointerException
        at com.sun.xml.internal.ws.fault.ExceptionBean.isStackTraceXml(ExceptionBean.java:166)
        at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.attachServerException(SOAPFaultBuilder.java:276)
        at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:117)
        at com.sun.xml.internal.ws.client.dispatch.DispatchImpl.doInvoke(DispatchImpl.java:184)
        ... 2 more


Results for JDK 1.8 are as expected...

d:\Fusion\test\ionBaseApp\ionTest>d:\Java\jdk1.8.0\bin\java -cp classes cogc.test.Class1
Exception in thread "main" com.sun.xml.internal.ws.fault.ServerSOAPFaultException: Client received SOAP Fault from server: Not found - parcel_key = 283458 Please see the server log to find more detail regarding exact cause of the failure.
        at com.sun.xml.internal.ws.fault.SOAP11Fault.getProtocolException(SOAP11Fault.java:178)
        at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:116)
        at com.sun.xml.internal.ws.client.dispatch.DispatchImpl.doInvoke(DispatchImpl.java:259)
        at com.sun.xml.internal.ws.client.dispatch.DispatchImpl.invoke(DispatchImpl.java:289)
        at cogc.test.Class1.main(Class1.java:94)


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run test class against a web service that produces results as below...

<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
   <soap:Body xmlns:tns="http://www.esri.com/schemas/ArcGIS/10.1" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
      <tns:Fault xmlns:my="urn:myNamespace" xmlns:tns="http://schemas.xmlsoap.org/soap/envelope/">
         <faultcode>tns:Client</faultcode>
         <faultstring>Not found - parcel_key = 283458</faultstring>
         <detail>
            <exception>this is my exception</exception>
         </detail>
      </tns:Fault>
   </soap:Body>
</soapenv:Envelope>


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Results for JDK 1.8 are as expected...

d:\Fusion\test\ionBaseApp\ionTest>d:\Java\jdk1.8.0\bin\java -cp classes cogc.test.Class1
Exception in thread "main" com.sun.xml.internal.ws.fault.ServerSOAPFaultException: Client received SOAP Fault from server: Not found - parcel_key = 283458 Please see the server log to find more detail regarding exact cause of the failure.
        at com.sun.xml.internal.ws.fault.SOAP11Fault.getProtocolException(SOAP11Fault.java:178)
        at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:116)
        at com.sun.xml.internal.ws.client.dispatch.DispatchImpl.doInvoke(DispatchImpl.java:259)
        at com.sun.xml.internal.ws.client.dispatch.DispatchImpl.invoke(DispatchImpl.java:289)
        at cogc.test.Class1.main(Class1.java:94)

ACTUAL -
The NPE is unexpected....

d:\Fusion\test\ionBaseApp\ionTest>d:\Java\jdk1.7.0_161\bin\java -cp classes cogc.test.Class1
Exception in thread "main" javax.xml.ws.WebServiceException: java.lang.NullPointerException
        at com.sun.xml.internal.ws.client.dispatch.DispatchImpl.doInvoke(DispatchImpl.java:196)
        at com.sun.xml.internal.ws.client.dispatch.DispatchImpl.invoke(DispatchImpl.java:203)
        at cogc.test.Class1.main(Class1.java:94)
Caused by: java.lang.NullPointerException
        at com.sun.xml.internal.ws.fault.ExceptionBean.isStackTraceXml(ExceptionBean.java:166)
        at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.attachServerException(SOAPFaultBuilder.java:276)
        at com.sun.xml.internal.ws.fault.SOAPFaultBuilder.createException(SOAPFaultBuilder.java:117)
        at com.sun.xml.internal.ws.client.dispatch.DispatchImpl.doInvoke(DispatchImpl.java:184)
        ... 2 more



REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package cogc.test;

import java.io.File;

import java.io.IOException;

import java.io.StringWriter;

import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.soap.MessageFactory;
import javax.xml.soap.SOAPBody;
import javax.xml.soap.SOAPConstants;
import javax.xml.soap.SOAPHeader;
import javax.xml.soap.SOAPMessage;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.ws.Dispatch;
import javax.xml.ws.Service;
import javax.xml.ws.soap.SOAPBinding;

import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import org.xml.sax.SAXException;

public class Class1 {

    public static void main(String[] args) throws Exception {

        //String endpointUrl = "http://msvfusd1:6011/LgpCustomerRequest/SendCustomerRequestProxy";
        String endpointUrl = "http://msvfusd1:6011/LgpCustomerRequest/RetrieveParcelCentroidProxy";
        //String endpointUrl = "file://response.xml";

        QName serviceName = new QName("urn:LgpCustomerRequests", "SendCustomerRequestService");
        QName portName = new QName("urn:LgpCustomerRequests", "SendCustomerRequestPort");

        /** Create a service and add at least one port to it. **/
        Service service = Service.create(serviceName);
        service.addPort(portName, SOAPBinding.SOAP11HTTP_BINDING, endpointUrl);

        /** Create a Dispatch instance from a service.**/
        Dispatch<SOAPMessage> dispatch = service.createDispatch(portName, SOAPMessage.class, Service.Mode.MESSAGE);

        /** Create SOAPMessage request. **/
        // compose a request message
        MessageFactory factory = MessageFactory.newInstance(SOAPConstants.SOAP_1_1_PROTOCOL);

        SOAPMessage request;
        SOAPMessage reply;

        Node envelope = readXml().getFirstChild();

        Node header = null;
        Node body = null;
        for (Node child = envelope.getFirstChild(); child != null; child = child.getNextSibling()) {
            if (child.getNodeType() != 1)
                continue;
            if (child.getLocalName().equals("Header"))
                header = child;
            if (child.getLocalName().equals("Body"))
                body = child;
        }

        if (body == null)
            throw new Exception("Soap envelope does not contain a body");
        request = factory.createMessage();
        if (header != null) {
            SOAPHeader soapHeader = request.getSOAPHeader();
            NodeList headerChildren = header.getChildNodes();
            for (int i = 0; i < headerChildren.getLength(); i++) {
                Node headerChild = headerChildren.item(i);
                Node importedChild = soapHeader.getOwnerDocument().importNode(headerChild, true);
                soapHeader.appendChild(importedChild);
            }

        }
        SOAPBody soapBody = request.getSOAPBody();
        NodeList bodyChildren = body.getChildNodes();
        for (int i = 0; i < bodyChildren.getLength(); i++) {
            Node bodyChild = bodyChildren.item(i);
            Node importedChild = soapBody.getOwnerDocument().importNode(bodyChild, true);
            soapBody.appendChild(importedChild);
        }

        reply = (SOAPMessage) dispatch.invoke(request);

        SOAPBody responseBody = reply.getSOAPBody();
        Node response = responseBody.getParentNode();

        System.out.println(serialize(response));

    }

    public static Node readXml() throws ParserConfigurationException, SAXException, IOException {
        File fXmlFile = new File("centroid.xml");
        DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
        dbFactory.setNamespaceAware(true);
        DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
        Document doc = dBuilder.parse(fXmlFile);
        return doc;
    }

    public static String serialize(Node node) throws TransformerConfigurationException, TransformerException {
        TransformerFactory tf = TransformerFactory.newInstance();

        Transformer transformer = tf.newTransformer();
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");

        StringWriter writer = new StringWriter();
        transformer.transform(new DOMSource(node), new StreamResult(writer));

        String output = writer.getBuffer().toString();

        return output;
    }

}

---------- END SOURCE ----------

SUPPORT :
YES