"deselectRow" doesn't animate if using "popViewController" - ios

Question

Swift 5, Xcode 10
My app uses two ViewControllers:
VC1, UITableView, clicking on a cell calls
VC2, displays further information about a cell with the default UINavigationBarItem "back" button on the top left and an addition "save" button at the bottom
The "save" buttons saves the changes made. To go back to the VC2, you can either click on the "back" button or save the changes, which also automatically loads VC2 using:
#IBAction func onClickSave(_ sender: Any) {
//Save changes
delegate?.passRowSavedBack(true) //Tell VC1 that changes were saved
navigationController?.popViewController(animated: true)
}
If I go back using the UINavigationBarItem "back" button, the cell also keeps its selection color for a second, then removes it (like in the iOS "Contacts" app) using this:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(true)
myTableView.deselectRow(at: mylastRowPickedIndex!, animated: true)
}
Example gif.
The problem is: If I go back with the "Save" button, this code is called too but there's no animation.
My guess is that popViewController takes longer to go back than whatever the "back" button calls, so the animation is played but you don't "arrive" in time to see it.
But how do I fix this? Is there a different way to go back to VC1 through the "Save" button (without removing the default "back" button!) that still plays the animation?
Edit: What I'm doing exactly:
In VC2: Save the changes
Tell VC1 that they were saved with a delegate (check 1st code above):
protocol PassingProtocol {
func passRowSavedBack(_ valueSent: Bool)
}
Go back to VC1 using popViewController (check 1st code above)
In VC1: deselectRow in viewWillAppear (check 2nd code above)
rowsSaved[lastRowPicked] = true, so it can add an accessoryType in here:
public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! TableViewCell
cell.accessoryType = (rowsSaved[indexPath.row]==true) ? .checkmark : .none
return cell
}
myTableView.reloadData() - so it displays the new checkmark

Answer 1

Okay, finally I think I understand what is the problem.
You are calling myTableView.reloadData() and this is the problem with deselecting animation.
You can move myTableView.reloadData() in viewDidAppear() and everything will be okay.