I have an issue very similar to that in 4.3.7.Final

Using 'scroll()', Query and Criteria are not returning the same results.

Using Query, the collection is filled correctly:
String hqlJoinFetchTest =
"from ModelA a " +
"left outer join fetch a.modelb as b";
Query query = sessionFactory.getCurrentSession().createQuery(hqlJoinFetchTest);

Using Criteria, the collection only contains the first element (and parents are duplicated):
Criteria searchCriteria = session.createCriteria(ModelA.class);
searchCriteria.setFetchMode("modelb", FetchMode.JOIN);