Adding tooltip to submenu

Adding tooltip to submenu

I am unable to see the tooltip when using it for submenu:
<ui:composition
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui"
xmlns:pe="http://primefaces.org/ui/extensions"
xmlns:c="http://java.sun.com/jsp/jstl/core">
<p:menubar styleClass="menu">
<p:submenu id="dye" label="dye1" >
<p:menuitem value="#{messages.OS_MENU}"
actionListener="#{navMenuBean.actionListener}"
title="#{messages.OS_TITLE}" update=":mainForm" ajax="false"
icon="ui-icon-star"/>
<p:menuitem value="#{messages.GEN_MENU}"
actionListener="#{navMenuBean.actionListener}"
title="#{dim_messages.GEN_TITLE}" update=":mainForm" ajax="true"
icon="ui-icon-star"/>
<p:menuitem value="#{messages.INFO_MENU}"
actionListener="#{navMenuBean.actionListener}"
title="#{dim_messages.INFO_TITLE}" update=":mainForm" ajax="true"
icon="ui-icon-star"/>
</p:submenu>
<pe:tooltip for="dye" value="test"/>
</p:menubar>
</ui:composition>
I think the syntax is correct
Any advice what I am missing
Thanks