Ok so I've noticed that I can't change my topic title anymore when I edit the first post. It changes the title inside the topic but not on the outside where people scroll through headings. This is a pain when I'm trying to say that the winners have been announced in my raffle but they can't see the title. I've been able to change the heading before just not anymore. Any ideas what changed?
Kendall is correct, this is a bug and it will be fixed with the next sync.
The forums have a search feature at the very bottom, or the bug base can be found and searched via the Report Bug link at the bottom (right hand menu) of every page. In the future I'd recommend using either of those first as you may find your answer quicker.