iPad panel mode - the map area is not touchable when adding Pulley programmatically

[az-oolloow]

I tried adding Pulley with Carthage, and while it sort of works, i can't tap the map that i drew behind the drawer.

e.g.

class MyViewController: UIViewController {
    override func viewDidLoad() {
                let drawer: UIViewController = UIViewController()
        drawer.view.backgroundColor = .red
        
        let main = UIViewController()
        let mv = MKMapView()
        mv.translatesAutoresizingMaskIntoConstraints = false
        main.view.addSubview(mv)
        mv.leftAnchor.constraint(equalTo: main.view.leftAnchor).isActive = true
        mv.rightAnchor.constraint(equalTo: main.view.rightAnchor).isActive = true
        mv.topAnchor.constraint(equalTo: main.view.topAnchor).isActive = true
        mv.bottomAnchor.constraint(equalTo: main.view.bottomAnchor).isActive = true
        
        let pulley = PulleyViewController(contentViewController: main, drawerViewController: drawer)
        pulley.allowsUserDrawerPositionChange = false
        pulley.displayMode = .automatic
        pulley.panelCornerPlacement = .topRight
        
        pulley.view.translatesAutoresizingMaskIntoConstraints = false
        self.view.addSubview(pulley.view)
        pulley.view.leftAnchor.constraint(equalTo: self.view.leftAnchor).isActive = true
        pulley.view.rightAnchor.constraint(equalTo: self.view.rightAnchor).isActive = true
        pulley.view.topAnchor.constraint(equalTo: self.view.topAnchor).isActive = true
        pulley.view.bottomAnchor.constraint(equalTo: self.view.bottomAnchor).isActive = true
    }
}
```
The area below my red drawer can't be interacted with, e.g. if i double tap it then the mapview doesn't zoom in. It seems that the `PulleyPassthroughScrollView` doesn't pass the hits down somehow.

It works fine in demo app, but that uses Storyboards.

Any ideas on what i did wrong?