We have this same issue and it creates a lot of issues. For example, we have 3 stages for our workflows and by the time we get to stage 3 and out creative team is working on edits, the commentors (on stage 1) are not able to respond back because we have their stage lock after the deadline passes. It causes our teams to take conversations out of Proof and work in MS Teams or Email.
I am curious as to how other work too with this issue.