I was trying to test some Basic and important Use Case almost needed by everyone , in Doc Studio with version 18.104.22.168 and found couple of things that must be there and very important :-
1.) Once Reviewer make his/her comments and Documents gets back to Draft/Open state. So Assigned User OR Created By whosever responsible for making changes in Document Content's should see Reviewer Comments and Edit Content Window on same screen. Currently if we see the Reviewer Comments on that window we/user can't edit Content and need to switch window to edit the content but then Reviewer Comments are not visible.
2.) When Reviewer make his/her comments and Documents gets back to Draft/Open state and to Assigned User/Created By whosever responsible, Responsible person can't copy Reviewer Comments and paste it into Edit Content Window. (FYI: If there is single comment done by reviewer then it works but if there is more than one comments then this don't work , totally looks like a bug). Important thing is during document maturing phase most of the things works on copy paste mechanism, no one wants to re-type again.
What you thought on this? As i had a WebEx with PTC Support as well they suggested to raise a idea and might be get solved in future release.