ios9 breaking flows with back button

in ios9 when back button is clicked once, it will come twice back.
eg: 1 st page is index page, 2nd page is home page and third page is about page. Now when, ios9 back button is clicked from about page instead of stopping in home page it will come to home page and again it will come back to index page.

Thanks

Take a look at this iOS9 Transitions