The header and footer specified by f:facet in rich:dataTable don't show up as header and footer but repeat at each row in JSP.

Issue

I have the following code specified in a rich:dataTable in a JSP page:

<rich:column>
     <f:facet name="header">My Header Value:</f:facet>
     <h:outputText value="#{myBean.myProperty}" />
</rich:column>

The page is rendered with the following result:

My Header Value: somevalue1
My Header Value: somevalue2

What is expected to be showing up on the page is:

My Header Value:
somevalue1
somevalue2