I’m here to confirm that this is still an issue.
I know I have an old iOS version (15), so I don’t know if in newer versions this has already been fixed?
I never use this feature on other people’s / companies’ forums, so it’s not a big deal for me.
I also don’t plan on having this feature on my own forum, so my users will not have this issue either.
If you ask me “why”: it’s possible that an email notification is no longer accurate if the person who replied had to make changes to their post, so that will create a weird conversation.