Child UITableViewController does not scroll up when keyboard appears - swift

Question

I have searched as many posts as I found and still I cannot solve the problem. Please keep in mind that I have tried all the solutions provided that I have found and still when the keyboard appears the table does not scroll up, nor does it adjust its content view. The table v.c. is a child of a v.c., it is being pushed by the nav con (modal also does not work), below all of this sits a tab bar controller. Below is the code which I consider to be relevant.
Code inside the v.c.:
override func viewDidLoad() {
super.viewDidLoad()
safeGuide = self.view.safeAreaLayoutGuide
view.backgroundColor = UIColor.customColoursForAllElements(colourName: "background blue")
programMainMenu = self.tabBarController as? ProgramMainMenu
setTopViews()
let msgsArea = ChatMsgsAreaTVC(typeForCurrentInstance: .singleChat(otherMemberName: self.otherMemberName), userUID: self.userUID, searchResultMsg: msgSelectedInSearch != nil ? msgSelectedInSearch : nil, searchTxt: self.searchTxt)
msgsArea.valuesForSingleChat = chatDetails
displayChild(controller: msgsArea)
}
fileprivate func displayChild(controller: UIViewController) {
self.addChild(controller)
self.view.addSubview(controller.view)
controller.view.translatesAutoresizingMaskIntoConstraints = false
let childConstraints = [
controller.view.topAnchor.constraint(equalTo: detailsContainer.bottomAnchor, constant: 10),
controller.view.bottomAnchor.constraint(equalTo: safeGuide.bottomAnchor, constant: -55),
controller.view.leadingAnchor.constraint(equalTo: backBtn.leadingAnchor),
controller.view.trailingAnchor.constraint(equalTo: optionBtn.trailingAnchor)
]
NSLayoutConstraint.activate(childConstraints)
controller.didMove(toParent: self)
}
the code below is from the child table view controller:
override func viewDidLoad() {
super.viewDidLoad()
NotificationCenter.default.addObserver(self, selector: #selector(keyboardWillShow), name: UIResponder.keyboardWillShowNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(keyboardDidHide), name: UIResponder.keyboardDidHideNotification, object: nil)
configureMsgsTable()
observeAudioRecAccess()
setupAudioRecorder()
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.resignFirstResponder()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
DispatchQueue.main.async {self.becomeFirstResponder()}
}
override func viewDidDisappear(_ animated: Bool) {
super.viewDidDisappear(animated)
NotificationCenter.default.removeObserver(self)
}
override var canBecomeFirstResponder: Bool {return true}
override var canResignFirstResponder: Bool {return true}
#objc func keyboardWillShow(notification: Notification) {
// note: changing the content size of the table does not work at all.
}
#objc fileprivate func keyboardDidHide() {
if !bypassForSetup {bypassForSetup = true}
else {
if msgTxtArea.isFirstResponder {msgTxtArea.resignFirstResponder()}
if addFileToMsgBtn.isSelected {addFileToMsgBtn.isSelected = false; addFileToMsgBtn.resignFirstResponder(); alterFileToMsgBtn(selected: false)}
}
}
fileprivate func configureMsgsTable() {
tableView.contentInsetAdjustmentBehavior = .always
tableView.backgroundColor = .clear
tableView.keyboardDismissMode = .interactive
tableView.separatorStyle = .none
tableView.showsVerticalScrollIndicator = false
tableView.estimatedRowHeight = 100
tableView.sectionFooterHeight = 0.0
tableView.scrollsToTop = false
tableView.setBottomInset(to: -15)
}
I also have a custom input accessory view that I have not included in this code.