Qml SwipView current index changes on changing swipe orientation

Question

I am trying to switch the orientation of the swipe on some specific item/page index of the swipeview in qml. When I change the orientation using this piece of code, index changes for no reason that I know of.

SwipeView {
    id: view
    currentIndex: 0
    anchors.fill: parent
    anchors.top: parent.top

    onCurrentIndexChanged: {
        if(view.currentIndex === 3 || view.currentIndex === 4)
            view.orientation = Qt.Vertical

        else
            view.orientation = Qt.Horizontal
    }
//home
    Item1 { }
    Item2 { }
    Item3 { } 

Is it bug or there is something that I am doing wrong ?