Does anyone have any clues as to what might be causing this?
Nope. I've had it happen to. Some tickets seem to be persistently
afflicted with this. I've manually gone in to correct the subject, and
had it change again later into a monstrously long thing.
As far as I can tell, it doesn't appear that the subject was altered
in any way.
Just to confirm, I asked the person who sent in the email and they
said they
clicked reply, typed their response and did not change the subject
I looked at the headers of the mail:
Subject: Re: [RT - General