Problem with contexMenu on a modalPanel

[-firefly-]

Context menu doesn't work.

I'm using richfaces-3.2.0.SR1. I have a contextMenu like this:

<rich:contextMenu id="myMenu" attached="false" submitMode="ajax" event="oncontextmenu">
 <rich:menuItem value="op1" action="#{myBean.op1}" reRender="grid"/>
</rich:contextMenu>

and a modalPanel like this:

<rich:modalPanel id="myModal" autosized="true">
 <a4j:form reRender="myModal">
 <h:panelGroup id="gridPanel">
 <rich:scrollableDataTable id="grid"/>
 </h:panelGroup>

 <rich:componentControl attachTo="gridPanel" for="myMenu"
 event="oncontextmenu" operation="show"/>
 </a4j:form>
</rich:modalPanel>

I tried to place contextMenu into modalPanel form:

<rich:modalPanel>
 <a4j:form>
 <rich:contextMenu/>
 </a4j:form>
</rich:modalPanel>

then I got "New node for ID ... is not present in response" error in a4j:log and modalPanel closes itself when I click on menu items.

I also tried to place contextMenu in a separate form on a page:

<h:form>
 <rich:contextMenu/>
</h:form>
<rich:modalPanel>
 <a4j:form>
 </a4j:form>
</rich:modalPanel>

but in this case contextMenu appears below the modalPanel.

So, what is the proper way of using a contextMenu on a modalPanel?