It seems like approval requests cannot be edited in the RA-web anymore.
1. Create an approval profile requiring at least 1 approval
2. Create a certificate profile requiring approval for any action by approval profile created in step 1.
3. Enroll an end entity using the created certificate profile
4. login to RA-Web with another administrator --> Manage requests --> Review --> Edit Data.
5. No field is modifiable. (At least CN should be with default settings).