Given two entities named Person and Phone with a oneToMany relationship;

And database is seed with one Person with two Phones;

When we try to select all persons with specific columns from each entities, like in query below:

session.createQuery("select distinct p.id, ph.number from Person p left join p.phones ph" )
					.getResultList();

Then we get two Person (one for each Phone) entities instead of one, see attached image.

Full test case can be found here: https://github.com/rmpestano/hibernate-test-case-templates/blob/master/orm/hibernate-orm-5/src/test/java/org/hibernate/bugs/ORMUnitTestCase.java