I am using a Navigation Controller in Xcode8, the navigation bar doesn't appear on the following View Controller on the Dashboard. They will appear on the simulator and on the ViewController topDown tree, but nothing on the view of the dashboard.
Navigation Controller Screenshot
The problem was the segue before the Navigation Controller. When I delete it, all the Navigation Bar come back. Don't know why, but if the problem happen, you just have to delete this segue and then with Ctrl+Z, the segue come back and the nav bar stay