I believe that a Moderator can modify the Subject line of a thread to add a missing or incorrect hashtag. ?
If a member modifies a subject line in reply to a thread, like by adding ¡±...Problem Solved¡±, then it shows up as a second thread. ?
I usually use the merge function to merge it back into the correct thread.
Of course this requires Moderator(s) who are focused on the structure, as opposed necessarily to the content.
Larry?