With that error I got, I think I must have double clicked the “submit” button. But I was surprised it didn’t display a post at all.
I do think this inability to edit posts could be an issue – maybe discus or a different forum software could work better. Say you were copying something personal that was unrelated to CE and accidentally pasted it and submitted – you couldn’t as a user edit what was posted. Someone could send an email over to request you manually edit things, it just would be a temporary lag. I guess it demands making sure comments and posts are very accurate (granted, guest posts on discus might be unable to be edited as well).