Jaxb fails to parse XML after moving to java 8

I Am making to move to java 8, and in the process jaxb fails to parse an xml configuration.

While changing nothing but the JDK, the same code and file is successfully parsed using java 7, but does not parse correctly on java 8.

Note that there is no exception thrown but the data does not appear in the object that the xml is unmarshald into.

Any ideas what might cause this very annoying failure.