Can you confirm the version of JAXB for 5.0.0.GA. The current version is:

<version.sun.jaxb>2.1.4</version.sun.jaxb>

dependency>
<groupId>sun-jaxb</groupId>
<artifactId>jaxb-api</artifactId>
<version>${version.sun.jaxb}</version>
</dependency>

<dependency>
<groupId>sun-jaxb</groupId>
<artifactId>jaxb-impl</artifactId>
<version>${version.sun.jaxb}</version>
</dependency>

<dependency>
<groupId>sun-jaxb</groupId>
<artifactId>jaxb-xjc</artifactId>
<version>${version.sun.jaxb}</version>
</dependency>

But the latest release 2.1.9:
https://jaxb.dev.java.net/2.1.9/

JBCTS-833 will be done again for the GA release.