Flickable can't scroll horizonally with Alt + mouse wheel in WebAssembly

import QtQuick
import QtQuick.Window
import QtQuick.Layouts
import QtQuick.Controls

ApplicationWindow {
    id: root

    height: 480
    visible: true
    width: 640

    Flickable {
        anchors.fill: parent
        contentWidth: grid.width
        contentHeight: grid.height
        clip: true
        GridLayout {
            id: grid
            columns: 32

            Repeater {
                model: 32 * 32
                Rectangle {
                    required property int index
                    color: Qt.rgba(Math.random(), Math.random(), Math.random(), 1)
                    width: 100
                    height: 100
                    Text {
                        text: parent.index
                        font.pixelSize: 20
                    }
                }
            }
        }
    }
}