Unfortunately this has nothing to do with whether the session is thread local or not. You can look at this thread for crossreference:
http://forum.hibernate.org/viewtopic.ph ... 43#2306043
However, noone has replied yet although there are at least 3 threads out there describing the same problem. It would be cool to get any feedback, be it a user error or a bug that is being worked on. I guess you could patch the sources yourself for now by checking for stateless sessions and switching too lazy fetching on those and work with your patched version until this gets resolved.