With this new set up I'm not sure if this is a bug or a new feature, but I've add a new team and a new concept to the page, but all can seem to do is edit characters, teams, similar, locations, and objects. Why can I not go to an issue and add that new wiki to it?
It's worth noting that, sometimes, you can't add a recently created page to another article because the new page doesn't have any content on it; you need to edit it once,
What @pikahyper said is true. I'm just throwing that out there (though I don't know if what I said is still true post-update).