Using 4.2.21, the generated SQL is wrong in a different way:

{{
select
person0_.id as id1_0_0_,
person1_.id as id1_0_1_,
person0_.parentId as parentId2_0_0_,
person1_.parentId as parentId2_0_1_
from
Person person0_
left outer join
person0_ with (updlock, rowlock )erson1_ with (updlock, rowlock )
on person0_.parentId=person1_.id
where
person0_.id=?
}}

Fails due to erson1_.