Overlay drawing errors with Mapbox GL during zooming

import QtQuick 2.10
import QtQuick.Controls 2.10

import QtLocation 5.11
import QtPositioning 5.6

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: qsTr("Mapbox Overlays")

    Map {
        id: map
        anchors.fill: parent

        gesture.acceptedGestures: MapGestureArea.PanGesture | MapGestureArea.FlickGesture | MapGestureArea.PinchGesture | MapGestureArea.RotationGesture | MapGestureArea.TiltGesture
        gesture.flickDeceleration: 3000
        gesture.enabled: true

        center: QtPositioning.coordinate(-27, 153)

        plugin: Plugin {
            name: "mapboxgl"

            /*
                PluginParameter {
                    name: "mapboxgl.mapping.use_fbo"
                    value: false
                }*/
        }

        DynamicParameter {
            type: 'paint'
            property var layer: 'QtLocation-polyDashed'
            property var lineWidth: 10
            property var lineColor: 'white'
            property var lineDasharray: [0, 2] // dashes
        }

        DynamicParameter {
            type: 'layout'
            property var layer: 'QtLocation-polyDashed'
            property var lineCap: "round"
        }


        MapPolyline {
            objectName: 'polyDashed'
            id: poly
            line.width: 10
            line.color: 'deepskyblue'

            path: [
                { latitude: -27, longitude: 153.0 },
                { latitude: -27, longitude: 154.1 },
                { latitude: -28, longitude: 153.5 },
                { latitude: -29, longitude: 153.4 }
            ]
        } // MapPolyline
    }
}