iOS 10 Messages Extension - Wrong Layout when using Storyboard Segue

Question

When using Segues in Messages Extension Application the layout gets messed up.
Is there any way to solve this issue while still using storrybord segues?

Answer 1

I hope this won't always be necessary, but I ended up using a combination of a constraint outlet, presentationStyle variable, and viewDidLayoutSubviews() to overcome this bug/oversight.

In my DetailViewController:

@IBOutlet weak var myViewTopConstraint: NSLayoutConstraint!
var presentationStyle: MSMessagesAppPresentationStyle?

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()
    if presentationStyle == .expanded {
        myViewTopConstraint.constant = 86
    } else {
        myViewTopConstraint.constant = 0
    }
}

And in my MainViewController:

override func willTransition(to presentationStyle: MSMessagesAppPresentationStyle) {
    if let detailController = presentedViewController as? DetailViewController {
        detailController.presentationStyle = presentationStyle
    }
}

And in case it makes a difference, my segue presents modally as a Page Sheet.