Navigation Controller & TableView: NavBar Hidden after hidden = true one time - ios

Question

I have a UITableView embedded in a NavigationController. The cells each link out to a larger information ViewController. For UI purposes, I hide the Navigation Bar on the TableView and show it in the InfoViewController.
The problem I am experiencing is this: upon booting the app, the NavBar is successfully hidden on the TableView. The first time I tap into a cell and open an InfoViewController, the NavBar comes back as expected. I back out of that VC and into the TableView. Again, the NavBar is hidden, as expected. If I tap into another cell, the NavBar is not displayed as expected. NOTE: This happens even when I remove any code to hide the Navigation Bar.
Here are the relevant code snippets:
TableViewController (in ViewDidLoad()):
self.navigationController?.isNavigationBarHidden = true
InfoViewController:
override func viewWillAppear(_ animated: Bool) {
self.navigationController?.navigationBar.isHidden = false
super.viewWillAppear(animated)
}
Why would it work the first time, but not the second. Any help is appreciated!
For clarification:
App opens to TableView:
enter image description here
I click into the TableViewCell to Segue to InfoViewController:
enter image description here
I hit "Back" to go back to TableViewController. NavBar is still hidden. I click on the same cell:
enter image description here
EDITED: Messed up the TableViewController Code. Put = false instead of = true.
Also, I have one more thought, please someone check this for me. The TableViewController is inside a UIContainerView. It is almost as if when I hit "Back" I am exiting the NavigationController flow and I cannot get back in it.

Answer 1

Please try this code its working fine for hiding navigationBar
TableViewController
class TableViewController: UITableViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.navigationController?.isNavigationBarHidden = true
}
}
InfoViewController
class InfoViewController : UIViewController {
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.isNavigationBarHidden = false
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationController?.isNavigationBarHidden = true
}
}

Answer 2

Simple hide navigationbar again when the view controller is appear again,
do below code in tableViewController:
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationController?.isNavigationBarHidden = true
}