See: https://forum.hibernate.org/viewtopic.php?f=1&t=1033719&p=2477844#p2477844

I've got a local test case with the implemented fix, where the behavior and the fix is demonstrated. The test-case is on my own code-base, so I can't share that easily.

As 4.3 contains the exact same code, I presume this version is affected as well.

I'm working on a patch with unit-test on https://github.com/jfbenckhuijsen/hibernate-orm
Note that this patch is highly experimental, as I have no extensive experience with Hibernate hacking, thus no idea which regressions I may introduce.