Segue back button disappeared in iOS 9
Before iOS 9 was released, I've developed an app targeting iOS 8.4. I've used some UITableView connected each other via segue of kind "Show (e.g. Push)". It worked perfectly with the right behavior: every time I switched from a UITableView to another, the back button appeared, so the user is able to turn back to the previous scene; the back button appeared also from UITableView to UIViewController, using the same kind of segue.
Now I have upgraded to the latest version of Xcode and targeting the app to iOS 9.0, I got this problem: now, if I go from UITableView to another UITableView, the back button doesn't appear anymore, but if I go from UITableView to UIViewController, the back button appears. I've seen other developers has had a similar problem (as you can see here, here and here), but I don't understand how they have solved (except for the third link, but it's not my case). Anyone knows how can I get back button working again? Thanks in advance
It looks like the guy who posted the second link is having the same problem as you. In a comment he said that the way he fixed it was getting rid of the extra navigation controllers:
No need put the navigation controller for each view. put the navigation controller start view only.
So that is what I would suggest doing. Only put a navigation controller on the first view controller. Get rid of all the others.