Please, read the forum, this has been explained many times already.
It's not obviously a problem, as it's not a problem with Cloud9 EHAM either. The FS9 AFCAD has been made this way to allow cross runway operation for AI, and it has been made like this with the help of several forum users. There's a very long thread about the AFCAD in this section, please read it if you are interested in the motivations, because it doesn't make much sense repeating it here.
If you don't like it, you can simply delete the dummy runway with AFCAD