UIScrollViewDelegate unresponsive on Mac Catalyst

Code Block import UIKit
class sideMagnifier: UIViewController,UIScrollViewDelegate {
    var immagineDaMagnificare = UIImage()
    @IBOutlet weak var imgToMagnify: UIImageView!
    @IBOutlet weak var scrollToMagnify: UIScrollView!
    override func viewDidLoad() {
        super.viewDidLoad()
        self.imgToMagnify.clipsToBounds = true
        self.scrollToMagnify.delegate = self
        imgToMagnify.image = immagineDaMagnificare
        self.scrollToMagnify.minimumZoomScale = 1.0
        self.scrollToMagnify.maximumZoomScale = 4.0
        let larghezzaContainer = UIScreen.main.bounds.width
        let altezzaContainer = UIScreen.main.bounds.height
        imgToMagnify.translatesAutoresizingMaskIntoConstraints = false
        imgToMagnify.widthAnchor.constraint(equalToConstant: larghezzaContainer).isActive = true
        imgToMagnify.heightAnchor.constraint(equalToConstant: altezzaContainer).isActive = true
    }
    func scrollViewDidZoom(_ scrollView: UIScrollView) {
        print("zoom")
    }
    func viewForZooming(in scrollView: UIScrollView) -> UIView? {
        return self.imgToMagnify
    }
    @IBAction func dismissButtonTapped(_ sender: UIButton) {
        self.dismiss(animated: true)
    }
}