Please go to your preferences page and make sure your "See Mature Topics" setting is set. Setting it to "Yes" means you see the Mature Topics forum (contains political and religious debates). Setting it to "No" means you do not see those threads.
There a load of annoying trivial problems with the new integration. Such as the one you mentioned.
Another one being the talk pages always have a blue link regardless if there has or hasn't been a topic been made in the respective forum. So i click on thinking some one has something to say. Only to auto post a new topic with no warning.
Does it have to be one or the other? I mean, back when the Wiki was more, you know, Wiki-like, and not incorporated, it didn't do any bad. People stuck to their pages. And it's fun! No warfare and no bleed-over into other articles either.