We finally found the error.
If you look at the following URL, you'll find it contains a small mistake:
| ?WSRPProducer=Application WSRP
producer&WSRPPortletHandle=/Application.InboxPortlet&WSRPPortletState=&WSRPRegistrationHandle=11&WSRPRegistrationState=&WSRPMode=wsrp:view&WSRPWindowState=wsrp:normal&WSRPQualifiedName=g_9bcea8ab_df1d_4ced_b0f1_453faf9f2c10&WSRPIsAnonymous=False&WSRPAction=wsrp%5Frewrite%3Fwsrp%2DurlType%3DblockingAction%26amp%3Bwsrp%2DinteractionState%3DJBPNS%
| 5F%2Fwsrp%5Frewrite
|
It contains "%26amp%3B" which is an encoded "&". This happend
because when you obtain the render/action url from the PortletResponse, JBoss returns:
| wsrp_rewrite?wsrp-urlType=blockingAction&wsrp-interactionState=JBPNS_
|
I don't quite understand why the url obtained from the PortletResponse contains an URL
that has already escaped the "&", but undoing this escaping by replacing the
"&" with just "&" solves the problem.
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