canGoBack and canGoForward return wrong value

import QtQuick 2.15
import QtQuick.Window 2.15
import QtQuick.Controls 2.15
import QtWebEngine 1.10

Window {
    id: window

    width: 800
    height: 600

    WebEngineView {
        id: webEngineView
        anchors.fill: parent
        url: "https://doc.qt.io/qt-5/qml-qtwebengine-webenginehistory.html"
    }

    Row {
        Button {
            id: mainPage
            text: "Go to Main Page"
            onClicked: webEngineView.url = "https://www.qt.io/"
        }
        Button {
            id: back
            enabled: webEngineView.canGoBack
            text: "Back"
            onClicked: webEngineView.goBack()
        }

        Button {
            id: forward
            enabled: webEngineView.canGoForward
            text: "Forward"
            onClicked: webEngineView.goForward()
        }
    }
}