UITabBarController's viewControllers present modal controller issue

Question

I have a UITabBarController with 4 viewControllers setup.

One of the controller has a button that present another controller (wrapped on UINavigationController) with the

Answer 1

If this is the same bug that I demonstrate here, the workaround I give is to prevent the user from switching to another tab while this tab is showing the presented view controller:

override func viewDidLoad() {
    super.viewDidLoad()
    self.tabBarController?.delegate = self
}
extension FirstViewController : UITabBarControllerDelegate {
    func tabBarController(_ tabBarController: UITabBarController, shouldSelect viewController: UIViewController) -> Bool {
        return self.presentedViewController == nil
    }
}