web jsf setup command generates incomplete web.xml if apache myfaces is choose

if you generate a simple jsf app with myfaces as implementation,
the web.xml will the myfaces specific listener:

<listener>
<listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
</listener>

this is the roo script i used:
=========
project --topLevelPackage x
persistence setup --provider HIBERNATE --database HYPERSONIC_IN_MEMORY

entity jpa --class ~.Person
field string --fieldName name --notNull
web jsf setup --implementation APACHE_MYFACES
web jsf all --package ~.jsf
=========

then trying to deploy it with:
mvn jetty:tun