遷移後にボタンが表示されない

Question

swift初学者です。
２画面間での遷移がうまくできせん。
画像に示した、③⇄④番での遷移の行き来を行いたいのですが、②の「編集」を押すと、③の画面に遷移するところまではいいのですが、③の「完了」を押すと遷移し④のように「編集」ボタンが非表示になり押せなくなります。
わかりにくい説明で申し訳ありませんが解決策を教えていただけると嬉しいです。
よろしくおねがいします。

//画像②、④のコード

import UIKit

//import DKImagePickerController

class textViewController: UIViewController,UINavigationControllerDelegate {
    
    
    var hennsyuButtonItem:UIBarButtonItem!
    
    
    
    @IBOutlet weak var imageScrollView: UIScrollView!
    @IBOutlet weak var nameLabel: UITextField!
    @IBOutlet weak var addressLabel: UITextField!
    @IBOutlet weak var dateLabel: UITextField!
    @IBOutlet weak var hyoukaLabel: UITextField!
    @IBOutlet weak var textView: UITextView!
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let appearance = UINavigationBarAppearance()
        appearance.configureWithOpaqueBackground()
        appearance.backgroundColor = .rgb(red: 173, green: 216, blue: 230)
        navigationController?.navigationBar.tintColor = UIColor.white
        //標準の高さ
        navigationItem.standardAppearance = appearance
        //ナビゲーションバーが透過する
        navigationItem.scrollEdgeAppearance = appearance
        //標準の文字の大きさ
        navigationItem.compactAppearance = appearance
        
        
        
        hennsyuButtonItem = UIBarButtonItem(title: "編集", style: .done, target: self, action: #selector(hennsyuButtonTapped(_:)))
        self.navigationItem.rightBarButtonItem = hennsyuButtonItem
        
        
    }
//        override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?){
//
//            self.view.endEditing(true)
//        }
        
        
        //編集ボタンを押したとき
        @objc func hennsyuButtonTapped(_ sender: UIBarButtonItem){
            
            let storyboard : UIStoryboard = self.storyboard!
            let hennsyuVC = storyboard.instantiateViewController(withIdentifier:"hennsyuViewController") as! hennsyuViewController
            navigationController?.pushViewController(hennsyuVC, animated: true)
            
            //self.present(hennsyuVC, animated: true, completion: nil)
        }
        
        
    
//    let pickerController = DKImagePickerController()
//                // 選択可能な枚数を20にする
//                pickerController.maxSelectableCount = 5
//                pickerController.didSelectAssets = { [unowned self] (assets: [DKAsset]) in
//
//                    // 選択された画像はassetsに入れて返却されるのでfetchして取り出す
//                    for asset in assets {
//                        asset.fetchFullScreenImage(completeBlock: { (image, info) in
//                            // ここで取り出せる
//                            self.imageView.image = image
//                        })
//
//                    }
//
//
//                }
//
//                self.present(pickerController, animated: true) {}
//
    
    
}

//画像③のコード

import UIKit
//import DKImagePickerController

class hennsyuViewController: UIViewController,UIImagePickerControllerDelegate,UINavigationControllerDelegate {
    
    var completButtonItem:UIBarButtonItem!
    
    
    @IBOutlet weak var textField: UITextView!
    
    var checkpermission = CheckPermission()
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let appearance = UINavigationBarAppearance()
        appearance.configureWithOpaqueBackground()
        appearance.backgroundColor = .rgb(red: 173, green: 216, blue: 230)
        navigationController?.navigationBar.tintColor = UIColor.white
        //標準の高さ
        navigationItem.standardAppearance = appearance
        //ナビゲーションバーが透過する
        navigationItem.scrollEdgeAppearance = appearance
        //標準の文字の大きさ
        navigationItem.compactAppearance = appearance
        
        checkpermission.checkCamera()
        
        completButtonItem = UIBarButtonItem(title: "完了", style: .done, target: self, action: #selector(completButtonTapped(_:)))
        
        self.navigationItem.rightBarButtonItem = completButtonItem
    }
    
    @IBAction func addImageButton(_ sender: Any) {
        
        //アルバムを呼ぶ
           let sourceType:UIImagePickerController.SourceType = .photoLibrary
            createImagePicker(sourceType:sourceType)
        
    }
    
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?){
        
        self.view.endEditing(true)
    }
    
    func createImagePicker(sourceType:UIImagePickerController.SourceType){
        
        let cameraPicker = UIImagePickerController()
        cameraPicker.sourceType = sourceType
        cameraPicker.delegate = self
        cameraPicker.allowsEditing = true
        
        self.present(cameraPicker, animated: true, completion: nil)
        
    }
    
    //完了ボタンを押した時
    @objc func completButtonTapped(_ sender: UIBarButtonItem){
        
        let storyboard : UIStoryboard = self.storyboard!
        let textVC = storyboard.instantiateViewController(withIdentifier:"textViewController") as! textViewController
        
        self.present(textVC, animated: true, completion: nil)
        
    }
    
    //＋ボタンから飛んできたのきた時はBackボタン(ナビゲーション)押せるように→押したらcell消す
    
}