벌크 연산 11:09 em.clear()를 하지 않았는데.....

[질문 템플릿]
1. 강의 내용과 관련된 질문인가요? 예
2. 인프런의 질문 게시판과 자주 하는 질문에 없는 내용인가요? 예
3. 질문 잘하기 메뉴얼을 읽어보셨나요? 예

[질문 내용]

Team teamA = new Team();
teamA.setName("teamA");
em.persist(teamA);
Team teamB = new Team();
teamB.setName("teamB");
em.persist(teamB);

Member member1 = new Member();
member1.setUsername("member1");
member1.setAge(10);
member1.changeTeam(teamA);
em.persist(member1);
Member member2 = new Member();
member2.setUsername("member2");
member2.setAge(20);
member2.changeTeam(teamA);
em.persist(member2);
Member member3 = new Member();
member3.setUsername("member3");
member3.setAge(30);
member3.changeTeam(teamB);
em.persist(member3);

em.flush();
em.clear();

int resultCount = em.createQuery("update Member m set m.age = 100")
        .executeUpdate();

Member findMember = em.find(Member.class, member1.getId());
System.out.println("findMember.getAge() = " + findMember.getAge());

em.clear()를 하지 않으면 10이 나와야 할거 같은데 100이 변경된게 영속성 컨텍스트에 반영이 된거 처럼 나오는데.

스펙이 바뀐걸까요? 아니면 제가 뭘 잘 못한걸까요?

https://drive.google.com/file/d/1qzmIqCOXOeCdy5McL0_RzcbugxbmdyMV/view?usp=share_link