Few issues with Touch events

[ystrot]

For some reason touch events don't work from the first time. And after animation they don't work at all. Here is full example:

class MorphingView: MacawView {

    required init?(coder aDecoder: NSCoder) {
        super.init(node: MorphingView.newScene(), coder: aDecoder)
    }

    class func newScene() -> Node {
        let stroke = Stroke(width: 15.0, cap: .round)
        let contents1 = [
            Shape(form: Line(x1: 90.0, y1: 110.0, x2: 210.0, y2: 110.0), stroke: stroke),
            Shape(form: Line(x1: 90.0, y1: 150.0, x2: 210.0, y2: 150.0), stroke: stroke),
            Shape(form: Line(x1: 90.0, y1: 190.0, x2: 210.0, y2: 190.0), stroke: stroke),
        ]

        let contents2 = [
            Shape(form: Line(x1: 110.0, y1: 150.0, x2: 135.0, y2: 125.0), stroke: stroke),
            Shape(form: Line(x1: 110.0, y1: 150.0, x2: 190.0, y2: 150.0), stroke: stroke),
            Shape(form: Line( x1: 110.0, y1: 150.0, x2: 135.0, y2: 175.0), stroke: stroke),
        ]

        var switched = false
        let group = contents1.group()
        group.onTouchPressed { e in
            group.contentsVar.animate(to: switched ? contents1 : contents2)
            switched = !switched
        }
        return group
    }
}