Forms labs mediapicker iOS 8 dismisses viewcontroller immediatly

I'm building an app with media picker support, I've used the example from the Xamarin.Forms.Labs project to build it and untill the upgrade to iOS 8 it worked perfectly. After the upgrade though I found out that whenever I open one of the screens of the media picker on iOS it dismisses itself immediatly.

Here is my code.

    private Task<MediaFile> GetMediaAsync(UIImagePickerControllerSourceType sourceType, string mediaType, MediaStorageOptions options = null)
    {
        UIWindow window = UIApplication.SharedApplication.KeyWindow;
        if (window == null)
            throw new InvalidOperationException("There's no current active window");

        UIViewController viewController = window.RootViewController;

        if (viewController == null)
        {
            window = UIApplication.SharedApplication.Windows.OrderByDescending(w => w.WindowLevel).FirstOrDefault(w => w.RootViewController != null);
            if (window == null)
                throw new InvalidOperationException("Could not find current view controller");
            else
                viewController = window.RootViewController;
        }

        while (viewController.PresentedViewController != null)
            viewController = viewController.PresentedViewController;

        MediaPickerDelegate ndelegate = new MediaPickerDelegate(viewController, sourceType, options);
        var od = Interlocked.CompareExchange(ref this.pickerDelegate, ndelegate, null);
        if (od != null)
            throw new InvalidOperationException("Only one operation can be active at at time");

        var picker = SetupController(ndelegate, sourceType, mediaType, options);

        if (UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Pad && sourceType == UIImagePickerControllerSourceType.PhotoLibrary)
        {
            ndelegate.Popover = new UIPopoverController(picker);
            ndelegate.Popover.Delegate = new MediaPickerPopoverDelegate(ndelegate, picker);
            ndelegate.DisplayPopover();
        }
        else
            viewController.PresentViewController(picker, true, null);

        return ndelegate.Task.ContinueWith(t =>
        {
            if (this.popover != null)
            {
                this.popover.Dispose();
                this.popover = null;
            }

            Interlocked.Exchange(ref this.pickerDelegate, null);
            return t;
        }).Unwrap();
    }

And the MediaPickercontroller

public sealed class MediaPickerController  : UIImagePickerController
{
    internal MediaPickerController(MediaPickerDelegate mpDelegate)
    {
        base.Delegate = mpDelegate;
    }

    public override MonoTouch.Foundation.NSObject Delegate
    {
        get { return base.Delegate; }
        set { throw new NotSupportedException(); }
    }

    public Task<MediaFile> GetResultAsync()
    {
        return ((MediaPickerDelegate)Delegate).Task;
    }
}