Thanks Vlad, I’m patching our Hibernate 4.3.11 artifact to backport this fix right now. I have to plan an upgrade to Hibernate 5.2.x and I can’t do it right now. I just wanted to mention here that the problem applies to the old version as well. And, IMHO, it’s quite severe, especially because I can’t think of an easy workaround (apart from changing our mappings, with all the consequences). Other suggestions welcome.