This has only happened once so far, but when I edited my sales thread it broke the first two links. They were hyperlinked in words to be specific.
It wasn't. I created the thread the day before yesterday. It hasn't happened again so I guess it could've been a one-time thing, but if it does I'll bump this thread.
If it does, state what you did and take a screenshot of the resulting broken link, if possible. There's half a chance something went awry in the WYSIWYG editor - try switching to BB Code Editor and checking the BB Code links are correct.