We have verified this on stage environment and found below issue
- Review changes button is displaying for completed form as expected

- After click on review button, provide comments . Mail is getting sent to candidate again but review comments are not displaying on mail

- When candidate open form again for signature, no where review comments are displaying. as per QA understanding how will candidate knows about changes which we he need to do. as i had given review comment as please update your signature again, but it is not displaying at candidate site.

CC: Narendra Kumar Nalin.Bhayana Samir
https://github.com/cbdr/DMS/pull/1007