qt.labs.platform.FileDialog folder property doesn't work

    FileDialog {
        visible: false
        id: fileDialog
        title: "Choose a GeoJSON file"
        fileMode: FileDialog.OpenFile
        property var standardPicturesLocations: StandardPaths.standardLocations(StandardPaths.PicturesLocation)
        folder: standardPicturesLocations[standardPicturesLocations.length - 1] //dataPath
        Component.onCompleted: console.log(folder)
        onAccepted: {
            geoJsoner.load(fileDialog.fileUrl)
        }
    }

QML debugging is enabled. Only use this in a safe environment.
qml: file:///home/paolo/Pictures
Threaded rendering is not optimal in the Mapbox GL plugin.