Currently, if a thread title changes, the updated title only renders for the post in which it changed. The new title should render as the thread title (as well as on index page for the affected forum). If a thread participant updates the title to something that is undesirable, the next poster can simply update it to it's original state or to something more appropriate.
May be search & feed implications.
Improvement
Resolved
Minor
Render thread title changes
Why this is done?
If say, we post a message about an upcoming forums deployment on Sept 1st, 2009 on the forums, then, change the date to Sept 2nd, 2009 and added a reply with changed subject date to that thread. Then, the original thread that was posted still maintained the Sept 1st date, potentially confusing users.
QA:
Post a thread with subject Subject 1
Post a reply with changed subject Subject 2
Success: The thread now should say Subject 2 in all the places where the title occurs.
Failure: The thread still says Subject 1.