Unable to connect to Jolokia on Fuse on EAP if RBAC is enabled

Issue

We have installed Fuse 6.3.0 on EAP 6.4, and are trying to connect to the server in the Hawtio console. This worked fine initially, but since we switched to RBAC, we are no longer able to connect to the server with Hawtio. In standalone-full.xml we can see that the hawtio user we are using is set up as SuperUser, but this does not seem to be taken into account:

  <access-control provider="rbac">
            <role-mapping>
                <role name="SuperUser">
                    <include>
                        <user name="$local"/>
                        <user name="hawtio"/>
                    </include>
                </role>
            <!-- ... other entries -->
        </access-control-->