Can also confirm the same issue from the same line of code using when m

@OneToMany(cascade = CascadeType.ALL, orphanRemoval = true, fetch = FetchType.EAGER)
@MapKeyJoinColumn(name = "key_entity_id")
private Map<KeyEntity, ValueEntity> keyValueMap = new HashMap<KeyEntity, ValueEntity>();

which is then used inside an @Embeddable class