missing copy/paste menu in UITextField/UIWebView

I had the same problem – everything else was working correctly, but all UITextViews were missing "copy / paste / select" menu, globally, through all application.

After some experimenting, I've found that the cause was either:

"Visible at Launch" property not set on a Window in MainWindow.xib

OR

Missing call to [self.window makeKeyAndVisible] inside application:didFinishLaunchingWithOptions: method of AppDelegate.

It works fine after fixing any of those. Try it.

If you work with Xcode 11+ and iOS 13+ projects (and SceneDelegate),

make sure that you apply changes in that exact order:

import UIKit

class SceneDelegate: UIResponder, UIWindowSceneDelegate {

    var window: UIWindow?


    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
        guard let windowScene = (scene as? UIWindowScene) else { return }
        window = UIWindow()
        window!.rootViewController = rootNavigation
        window!.windowScene = windowScene
        window!.makeKeyAndVisible()
    }
}

because, if you will apply it something like that:

    window!.makeKeyAndVisible()
    window!.windowScene = windowScene

you will have described in question problem. It will appear and look fine, work, but copy-paste actions will not appear. It took me a while to find this out.