Jira issue originally created by user prolic:
OrphanRemoval is only allowed for one-to-one and one-to-many mappings. But using One-To-Many, Unidirectional with Join Table, the relation will be declared as Many-To-Many with a unique contraint, but the orphan removal flag doesn't work in this case (but should).
Comment created by @beberlei:
Issue was closed with resolution "Fixed"