Hibernate and ManyToMany + @OrderColumn returns 42075 Null records

when I use @OrderColumn annotation, Hibernate returns collection with 42075 [Null] records, but without @OrderColumn everything works perfectly why? I want to use field "OrderNumber" to have always ordered entity by this field. The type of this "OrderNumber" on PostgreSQL side is "serial" with auto increasing count.

DocTestEntity:

@Entity
@Table(name = "`Document`")
public class DocTestEntity implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "`Document_ID`")
    private Integer id;


    @ManyToMany
    @JoinTable(name = "`DocumentEmployee`",
            joinColumns = @JoinColumn(name = "`Document_ID`"),
            inverseJoinColumns = @JoinColumn(name = "`Employee_ID`"))
    @OrderColumn(name ="`OrderNumber`", updatable = false, insertable = false)
    private List<EmployeeTestEntity> employeeEntityList;


    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public List<EmployeeTestEntity> getEmployeeEntityList() {
        return employeeEntityList;
    }

    public void setEmployeeEntityList(List<EmployeeTestEntity> employeeEntityList) {
        this.employeeEntityList = employeeEntityList;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        DocTestEntity docEntity = (DocTestEntity) o;
        return Objects.equals(id, docEntity.id);
    }

    @Override
    public int hashCode() {
        return Objects.hash(id);
    }




    @Override
    public String toString() {
        return "DocTestEntity{" +
                "id=" + id +
                '}';
    }
}

EmployeeTestEntity:

@Entity
@Table(name = "`Employee`")
public class EmployeeTestEntity implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "`Employee_ID`")
    private Integer id;

    @Column(name = "`Employee_name`")
    private String name;

    @Column(name = "`Employee_surname`")
    private String surname;
    


    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String employeeName) {
        this.name = employeeName;
    }

    public String getSurname() {
        return surname;
    }

    public void setSurname(String employeeSurname) {
        this.surname = employeeSurname;
    }



    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        EmployeeTestEntity that = (EmployeeTestEntity) o;
        return Objects.equals(id, that.id);
    }

    @Override
    public int hashCode() {
        return Objects.hash(id);
    }

    



    @Override
    public String toString() {
        return "EmployeeTestEntity{" +
                "id=" + id +
                '}';
    }

}

And Test DAO:

@Stateless
public class DocTestDAO {

    @PersistenceContext
    private EntityManager em;



    public DocTestEntity selectDocumentByID(Integer id) {


        var result = em.createQuery("SELECT DISTINCT a from DocTestEntity a " +
                        " WHERE a.id = :id ", DocTestEntity.class)
                .setParameter("id", id)
                .getResultStream()
                .map(Optional::ofNullable)
                .findFirst()
                .flatMap(Function.identity())
                .orElse(null);


        System.out.println("List records count is: " + result.getEmployeeEntityList().size());


        return result;

    }

}