Forum:"Sims who work in the career" category?

I just edited my user page and it suddenly said I added the category Sims who work in the career to it... why/how? I just changed my music section, I didn't use/change any templates or even manually added that category.

It seems the only page in this category is Template:Sim4, which I'm not even using.

So, what's going on here? Perhaps a bit of code in that template is wrongly adding categories or something? --- ☣   ʀodrigo  x  (talk)(contribs) 16:41, September 12, 2014 (UTC)