I’ve never seen that happen before. Do you have the posts setup any certain kind of way? Are they set to Public?
Any plugins active that could be interfering? Have you tried deactivating them one by one?
Sometimes when there is a link that is typed in wrong it will redirect to the homepage, or a 404 page. I copied the blog links and pasted them in the url area and it still redirected. So something is either wrong with the links, or there is something else effecting them.