Green Line Artifact in QML VideoOutput component

import QtQuick
import QtMultimedia

Window {
    width: 1024
    height: 768
    visible: true
    CaptureSession {
        id: captureSession
        camera: Camera { }
        videoOutput: output
    }
    Item {
        y: -6000
        width: 400
        height: 6400 // to make the line more visible
        VideoOutput {
            id: output
            fillMode: VideoOutput.Stretch
            orientation: 0
            anchors { fill: parent }
        }
    }
    Component.onCompleted: captureSession.camera.start()
}