Swift 4 Odd unexpected jump back to earlier storyboard

Question

I’m very new to Swift and Xcode and I’ve built a simple two storyboard app which has a welcome screen and a button that triggers a seque to second storyboard (for which I have c

Answer 1

The problem is that you are using a .partialCurl presented view controller. Don't. You've stumbled on a terrible bug, namely that there is an invisible area of the presented view controller which, if tapped, dismisses the view controller.

I have an elaborate and extremely hacky workaround, though the simplest solution is to avoid .partialCurl entirely. Here it is; put this code into your presented view controller:

override func viewDidAppear(_ animated: Bool) {
    super.viewDidAppear(animated)
    // workaround for curl bug
    if let grs = self.view.gestureRecognizers {
        for g in grs {
            if NSStringFromClass(type(of:g)).hasSuffix("CurlUpTapGestureRecognizer") {
                g.isEnabled = false
            }
        }
    }
}