Reply by email to notification is attributed to wrong user

Problem to solve

User B replies to an email notification from a threaded issue discussion, and the comment on the issue shows as coming from User A.

Example: https://gitlab.com/gitlab-com/customer-success/commercial-markets-initiatives/-/issues/148#note_549885417

Intended users

All personas

User experience goal

Reply by email should either correctly attribute the comment to the user who sent the reply, OR it should be clear that proper attribution was not possible.

Proposal

Further details

Permissions and Security

Documentation

Availability & Testing

What does success look like, and how can we measure that?

What is the type of buyer?

Is this a cross-stage feature?

Links / references