Camera active state does not work as expected

import QtQuick
import QtQuick.Controls
import QtMultimedia

Window {
    width: 640
    height: 480
    visible: true
    CaptureSession{
        camera: Camera{
            id: camera
            onActiveChanged: { console.log("camera.active CHANGED!!!"); }
        }
        videoOutput: video
    }
    VideoOutput{
        id: video
        width: parent.width
        anchors.top: parent.top
        anchors.bottom: txt.top
    }
    Row {
        id: txt
        anchors.bottom: parent.bottom
        Text { text: "       CAMERA STATUS:                " }
        Text { text: camera.active ? "ACTIVE" : "NOT ACTIVE" }
    }
}