Navigation bar and back button was disappear

Question

i've set the Navigation bar and back button like this picture but when i run the project the result would be like this (Navigation bar and bar button disapear)

this 2 view controller doesn't have any code

how can i solve. this

Answer 1

i've set the Navigation bar and back button like this picture but when i run the project the result would be like this (Navigation bar and bar button disapear)

this 2 view controller doesn't have any code

how can i solve. this