área apilada altas cartas

Así que creo que puedo haber encontrado un error de Highcharts en términos de área apilada:

Ejemplo de JSFiddle Highcharts

En este ejemplo, el "Social" tiene un punto de inicio antes del "Video en línea" y parece representar los puntos de las áreas apiladas de forma errática. Si anula la selección de los gráficos de izquierda a derecha y luego los selecciona de derecha a izquierda, los gráficos se representarán correctamente. ¿Alguien más ha encontrado esto?

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        "name": "Date",
        "unitType": "DATE",
        "title": {
            "text": null
        }
    }
],
"yAxis": [
    {
        "name": "Currency",
        "unitType": "CURRENCY",
        "title": {
            "text": null
        }
    }
],
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);

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