I am having the same issue. Here is my boiler plate code to recreate it.
This is the ViewController Class:
import UIKit
class SecondScreen: UITableViewController {
		
		private let anotherButtonIdentifier = "AnotherButtonCell"
		
		override func viewDidLoad() {
				super.viewDidLoad()
				
				tableView.register(AnotherCustomCell.self, forCellReuseIdentifier: anotherButtonIdentifier)
		}
		
		override func numberOfSections(in tableView: UITableView) -> Int {
				return 1
		}
		
		override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
				return 1
		}
		
		override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
				
				let cell = tableView.dequeueReusableCell(withIdentifier: anotherButtonIdentifier, for: indexPath) as! AnotherCustomCell
										
				return cell
		}
}
Here is the custom Cell code:
import UIKit
class AnotherCustomCell: UITableViewCell {
		
		override func awakeFromNib() {
				super.awakeFromNib()
		}
		
		override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
				super.init(style: style, reuseIdentifier: reuseIdentifier)
				
				self.backgroundColor = .red
				
				let button:UIButton = UIButton(frame: CGRect(x: 0, y: 0, width: 100, height: 50))
				button.backgroundColor = .black
				button.setTitle("Button", for: .normal)
				button.addTarget(self, action:#selector(self.handleButtonClick(sender:)), for: .touchUpInside)
				self.addSubview(button)
				
		}
		
		required init?(coder: NSCoder) {
				fatalError("init(coder:) has not been implemented")
		}
		
		@objc private func handleButtonClick(sender: UIButton) {
				print("Button click")
		}
}
I used two simulators. The first one 13.5 works as expected and the console puts out the output. The second simulator with 14.0 doesnt allow me to click the button. Nothing happens. Seems that the button is in the background or something. Any ideas?
