Bad behaviour with UITableViewCell

[NikKovIos]

I use a subclass of UIImageView

class FullScreenableImageView: UIImageView {
override func awakeFromNib() {
super.awakeFromNib()

    self.isUserInteractionEnabled = true
    
    let tapGesture = UITapGestureRecognizer(target: self, action: #selector(onTap))
    self.addGestureRecognizer(tapGesture)
}

func onTap() {
    if self.image != nil {
        let controller = SFFullscreenImageDetailViewController(imageView: self)
        controller.presentInCurrentKeyWindow()
    }
}

}

and after dismissing the imageView stays on the top of the window.