This is not a bug report but a small request.
Is there any way for a topic to send out notifications if a post is modified within the thread, not just added? I'm running a thread at the moment for some level testing which i'll be updating a lot, and i'm keeping my updates in one thread to make it easier to follow. I would just use posts to let people know i've updated but even i'd find constantly double and triple posting on it annoying (and i suspect an enraged pitchforking would eventually follow).
Obviously a feature like that being open has spam risk, so perhaps making it a mod-given assingment for a specific thread, like how threads are stickied at the moment. Feature might prove handy for some existing posts (like the HTL list).
But yeah, just a little idea. Cheers.