If a submission gets rejected it should block all actions done to it. The way it is now enables the flow to start all over again even having been marked as a rejection , so it could in theory be able to reject more than once , or verify a rejected submission.
I don't see a reason to block discussion about a rejected submission, people can do whatever they want if it's rejected, it's filtered out of most relevant search filters anyway.
If a submission gets rejected it should block all actions done to it. The way it is now enables the flow to start all over again even having been marked as a rejection , so it could in theory be able to reject more than once , or verify a rejected submission.