Flickable in SwipeView in Popup cancells overshoot movement on mouse scroll

S0ulM1ke

There is some complex structure that I'm trying to implement. I've tried to reproduce in smaller scale, and issue is the same.
When you try to scroll whole page down, it cancels overshoot movement. But, only in first try. After this, it overshoots normally.

At this this reproduction you need to scroll hard to see that movement cancels. In my app this happens constantly, no matter how big page is

import QtQuick 2.15
import QtQuick.Controls 2.15
import QtQuick.Window 2.15

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")

    Popup {
        id: pop

        anchors.centerIn: parent
        width: parent.width
        height: parent.height

        SwipeView {
            anchors.fill: parent

            Repeater {
                model: 6
                Loader {
                    active: SwipeView.isCurrentItem || SwipeView.isNextItem
                            || SwipeView.isPreviousItem
                    sourceComponent: Flickable {
                        id: flick

                        contentHeight: rec.height

                        Rectangle {
                            id: rec
                            width: parent.width
                            height: 600

                            color: index % 2 ? "#00ff00" : "#ff4500"
                        }
                        ScrollBar.vertical: ScrollBar {}
                    }
                }
            }
        }
    }

    Component.onCompleted: pop.open()
}

Am I doing something wrong?

S0ulM1ke

Update:
Changing Flickable to ScrollView solved the issue.
But still it's unclear why this behavior happens with Flickable