I just figured out what you meant (haha I shouldn't reply before coffee). Yeah.. They're duplications of the main.
Discussion
I suppose that probably is a bug... but I don't know if that's a bad one to have?
If they're duplicates of /main, it's a good bug! Although a redirection would be even better... Probably greater pain to implement.
I, too, thought that they would just be broken. I'd rather not worry about if unmonitored redirects are working. If they have to live, living as main is great for me