public render parameter not working with CSA Theme in Websphere 6.1

Question

I am trying to use Public Render Parameter to inter portlet communication.

I have PorteltA and PortletB on Submit of PortletA ( processAction) sets render parameter "city" which is defined in portlet.xml.

PortletB gets "city" parameter in doView() and display on view jsp.

Its working fine with Defautl Theme "Portal".

When I changed theme to "PortalWeb2" which do CSA (Client side aggrigation) I am expecting that 1. PorteltB's doView will not be called on PortletA's submit

But its getting called may be Portal "intelligently" figured out that PortletB supports render parameters.

But again in doView() of PortletB I am not getting Public Render parameter "city".

When I moved back to "Portal" Theme it worked.

Does it mean Public render parameter will not work with Client Side Aggrigation based Themes ??