[java] Hibernate - A collection with cascade=”all-delete-orphan” was no longer referenced by the owning entity instance

Mine was completely different with Spring Boot! For me it was not due to setting collection property.

In my tests I was trying to create an entity and was getting this error for another collection that was unused!

After so much trying I just added a @Transactional on the test method and it solved it. Don't no the reason though.

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