Ups, sorry, I posted too fast. I also created a workaround, and did not completely removed it, that's why I thought the issue was solved. Unfortunatelly, it still isn't. Anyway, my list comes from Hibernate, perhaps that is the problem? I do not do anything with the list in the nested conversation, I do not even read it. So it cannot be the problem. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4092949#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...