NPE when processing XMLStreamReader Midstream

I am attempting to read in a SOAP response into XmlBeans with an XMLStreamReader. I've skipped to body in the XMLStreamReader. When doing a XmlObject.Factory.parse( streamReader ) it throws this:

java.lang.IllegalArgumentException: prefix cannot be "null" when creating a QName
at javax.xml.namespace.QName.<init>(Unknown Source)
at com.bea.xml.stream.MXParser.getName(MXParser.java:1432)
at org.apache.xmlbeans.impl.newstore2.Locale.loadXMLStreamReader(Locale.java:979)
at org.apache.xmlbeans.impl.newstore2.Locale.parseToXmlObject(Locale.java:703)
at org.apache.xmlbeans.impl.newstore2.Locale.parseToXmlObject(Locale.java:693)
at org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoaderBase.java:217)
at org.apache.xmlbeans.XmlObject$Factory.parse(XmlObject.java:645)
at XMLStreamReaderBug.testBug(XMLStreamReaderBug.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:421)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:305)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:186)

This is fixed easily enough, by checking if the prefix is null in the Locale class and acting accordingly. Once this is done though, I get:

java.lang.NullPointerException
at org.apache.xmlbeans.impl.newstore2.Cur$CurLoadContext.finish(Cur.java:3032)
at org.apache.xmlbeans.impl.newstore2.Locale.loadXMLStreamReader(Locale.java:1069)
at org.apache.xmlbeans.impl.newstore2.Locale.parseToXmlObject(Locale.java:703)
at org.apache.xmlbeans.impl.newstore2.Locale.parseToXmlObject(Locale.java:693)
at org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoaderBase.java:217)
at org.apache.xmlbeans.XmlObject$Factory.parse(XmlObject.java:645)
at XMLStreamReaderBug.testBug(XMLStreamReaderBug.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:421)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:305)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:186)

I'll attach a testcase showing this bug and my patch for Locale which checks for a null prefix. The null prefix bug could also be problem with the StAX RI - however I'ved tried it with both the RI and Woodstox. Both give me the same issue with the prefix being null.