EBWS: deployment fails with xsd in nested locations and <xs:import ../>

Deployment of the following EBWS fails if the referenced xsd file contains a <xs:import ../> element:

<actions inXsd="/META-INF/request.xsd" outXsd="/META-INF/response.xsd" faultXsd="/META-INF/fault.xsd" validate="true">
<action name="action" class="org.jboss.soa.esb.samples.quickstart.publishAsWebservice.ESBWSListenerAction" process="displayMessage"/>
</actions>

The same action works if

• the xsd files are in the root of the *.esb archive OR
• the xsd files do not contain further import statements

Deployment failure:
Caused by: java.lang.IllegalArgumentException: Cannot resolve imported resource: vfsmemory://publish_as_webservice_WSDL/META-INF/types/custom-request-type.xsd