Nested nullable projection

[yanick4sh]

Today I tried to upgrade the spring boot version in my application.
I upgrade spring-boot from 3.3.5 to 3.5.4, but I faced regressions (or new wanted behavior ?) with nested projection.

I have a projection with another nested projection :

public interface MyProjection {
    String getReference();
    MyNestedProjection getType();
}

public interface MyNestedProjection {
    String getReference();
}

In my @Entity, type is an optional @ManyToOne.
I use MyProjection with QuerydslPredicateExecutor like that :

jpaCrudRepository.findBy(
    new BooleanBuilder(),
    q -> q.as(MyProjection.class).all()
)

In spring-boot 3.3.5 to 3.4.8 if type is null I still have my projected entity with "type" set to null (left join behavior)
In spring-boot 3.5.0 to 3.5.4 if type is null I don't have my projected entity (inner join behavior)

I didn't read anything about this change in any release note (I may have missed something...)