Approval issue for TRCS

Summary:

We have set approval unit with owner and reviewer approval.

from Oracle document, it seems that if the group is assigned write access right then if it is current owner, it will be able to edit data during approval.

we have set a group in reviewer with write access in the entity, during approval, the owner promote to the next lvl which is the reviewer group, but user is not able to edit any data, the field is grey out.

may I know if it is behaving normally or it is not, we expect the reviewer group with write access can edit data.