Default audio output device not listed as default in MediaDevices.audioOutputs

import QtQuick
import QtMultimedia

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("QtMultimedia audio outputs")

    Component.onCompleted:
    {
        for (const device of devices.audioOutputs)
            console.log("Device " + device.description + "; default: " + device.isDefault)
    }

    MediaDevices {
        id: devices
    }
}

qml: Device MacBook Pro Speakers; default: false
qml: Device BlackHole 2ch; default: false