Hello,
I've checked your issue and found out that your home menu item is Easyblog category. Your post URL will fall back to your home menu item since you have use this routing behavior:
http://take.ms/kK6cF . I have changed this and your page URL will use 'blog' menu item which is I believe it is the blog frontpage. What you can do to use the correct menu item, you can just use this option and manually set the menu item id:
http://take.ms/IOfUV . I have filled it with '111' for you as an example. Hope this helps.