Static content location does not work in EAP undertow mod_cluster balancer

Issue

• We use and EAP 7 instance as an undertow/mod_cluster balancer to other EAP instances. We added a file handler for static content to this balancer instance, but all requests for that content 404:

 <subsystem xmlns="urn:jboss:domain:undertow:4.0">
                <buffer-cache name="default"/>
                <server name="default-server">
                    <http-listener name="default" socket-binding="http" redirect-socket="https" enable-http2="true"/>
                    <http-listener name="management" socket-binding="mcmp-management" enable-http2="true"/>
                    <host name="default-host" alias="localhost">
                        <location name="/static" handler="static"/>
                        <filter-ref name="load-balancer"/>
                    </host>
                </server>
                <servlet-container name="default"/>
                <handlers>
                    <file name="static" directory-listing="true" path="/path/to/static/content"/>
                </handlers>
                <filters>
                    <mod-cluster name="load-balancer" management-socket-binding="mcmp-management" advertise-socket-binding="modcluster" advertise-protocol="ajp"/>
                </filters>
            </subsystem>