Hi @Andrea Boriero,

here is a reproducer. Enabled byte code enhancement seems to be a prerequisite for this bug to happen. As I am not sure how to enable this manually in hibernate, i was only able to create a reproducer using quarkus. But you can use it to see/debug the described things happening.

https://github.com/mickroll/quarkus-demonstrator/tree/HHH-16839-reproducer

Feel free to use and adapt this as a regression test in your project.

greets,
Michael