EntityManager Merge CLOB Column doesn't work

Dear Hibernate Developer Team Parteners,I want to ask a question about SimpleJpaRepository in Spring Data JPA Package,When i using the save(S entity) function to update a column,it doesn’t throw Exception,but there is no change for my data change.The structure of my table is as shown in the picture below:
image
All but one of these lines-SCENE_NAME are converted by converter from List to String, I want to update these columns when i add new element in list,but when i using save (actually is em.merge() its no change;
i want to ask its because of CLOB Column? Thanks

image

When i update it should be 2image

Try to replicate the issue with this test case template.

If you can, open a Jira issue and attach the test case.

ok,I know,i will using it