Query builder nested relations not populating when parent exists in identity map

[ThatsARapp]

Describe the bug
Relations two levels deep are not selected if there parent already exists in the identity map when using the query builder.

To Reproduce

import {
  Collection,
  Entity,
  ManyToOne,
  OneToMany,
  PrimaryKey,
} from '@mikro-orm/core';
import { MikroORM } from '@mikro-orm/sqlite';

@Entity()
export class User {
  @PrimaryKey()
  id!: string;

  @OneToMany(() => Post, post => post.user)
  posts = new Collection<Post>(this);
}

@Entity()
export class Post {
  @PrimaryKey()
  id!: string;

  @OneToMany(() => Comment, comment => comment.post)
  comments = new Collection<Comment>(this);

  @ManyToOne()
  user: User;
}

@Entity()
class Comment {
  @PrimaryKey()
  id!: string;

  @ManyToOne()
  post: Post;
}

let orm: MikroORM;

beforeAll(async () => {
  orm = await MikroORM.init({
    dbName: ':memory:',
    entities: [Comment, Post, User],
  });
  await orm.schema.refreshDatabase();
});

afterAll(() => orm.close(true));

beforeEach(async () => {
  const fork = orm.em.fork();
  await orm.schema.clearDatabase();
  fork.create(User, {
    id: 'user1',
  });
  fork.create(Post, {
    id: 'post1',
    user: 'user1',
  });
  fork.create(Comment, {
    id: 'comment',
    post: 'post1',
  });
  await fork.flush();
});

test('it should select comments even if posts have already been selected', async () => {
  const fork = orm.em.fork();
  await fork.qb(Post).select('*');
  const users = await fork
    .qb(User)
    .select('*')
    .joinAndSelect('posts', 'p')
    .leftJoinAndSelect('p.comments', 'c');
  expect(users[0].posts[0].comments[0]).toBeDefined();
});

//This one works without the initial   await fork.qb(Post).select('*');
test('it should select comments even if posts have already been selected', async () => {
  const fork = orm.em.fork();
  const users = await fork
    .qb(User)
    .select('*')
    .joinAndSelect('posts', 'p')
    .leftJoinAndSelect('p.comments', 'c');
  expect(users[0].posts[0].comments[0]).toBeDefined();
});

Expected behavior
Comments are returned as a child of posts

Versions

Dependency	Version
node	16.19.1
typescript	4.7.4
mikro-orm	5.6.15