Ok, I'm on the remaining issues today.
The problem is caused by JSR77 removing this JSR88 MBean
because of its name:
java.lang.Exception: jboss.management.local:type=JSR88DeploymentManager,name=DefaultManager
at org.jboss.mx.server.MBeanServerImpl.unregisterMBean(MBeanServerImpl.java:388)
at org.jboss.management.j2ee.LocalJBossServerDomain.cleanupLeftoverMBeans(LocalJBossServerDomain.java:769)
at org.jboss.management.j2ee.LocalJBossServerDomain.destroyService(LocalJBossServerDomain.java:535)
at org.jboss.system.ServiceMBeanSupport.jbossInternalDestroy(ServiceMBeanSupport.java:345)
at org.jboss.system.ServiceMBeanSupport.destroy(ServiceMBeanSupport.java:221)