Crash when calling Object.value() on QQmlListModel

import QtQuick

Window {
    width: 640
    height: 480
    visible: true

    ListModel { id: listModel }

    Component.onCompleted: {
        const rawObj = { innerList: [1, 2, 3] }
        listModel.append(rawObj)
        const convertedObj = listModel.get(0)

        console.log(rawObj.innerList)
        console.log(Object.values(rawObj.innerList)) // <-- OK

        console.log(convertedObj.innerList)
        console.log(Object.values(convertedObj.innerList)) // <-- Crashes
    }
}

const rawObj = { innerList: CppSingleton.qStringListProp }