Highcharts不显示阿拉伯语饼图的数据标签

我正在使用Highcharts,我在Pie Charts中遇到阿拉伯语问题.它适用于英语.我试过rtl<r但它不起作用.

var chart = new Highcharts.Chart({chart:{renderTo:'container',type:'pie'},

title: {
    text: '?? ???????!',
    useHTML: true, //bug fixed `IE9` and `EDGE`
    style: {
        fontSize: '20px',
        fontFamily: 'tahoma',
        direction: 'rtl',
    },
},

tooltip: {
    useHTML: true,
    style: {
        fontSize: '20px',
        fontFamily: 'tahoma',
        direction: 'rtl',
    },
},

plotOptions: {
    pie: {
        allowPointSelect: true,
        cursor: 'pointer',
        dataLabels: {
            enabled: true,
            y: -5, //Optional
            format: '\u202B' + '{point.name}', // \u202B is RLE char for RTL support
            style: {
                fontSize: '15px',
                fontFamily: 'tahoma',
                textShadow: false, //bug fixed IE9 and EDGE
            },
        },
    },
},

series: [{
    name: '????',
    colorByPoint: true,
    data: [{
        name: '????? ??????',
        y: 56.33
    }, {
        name: '?????? ?????',
        y: 24.03,
    }, {
        name: '?????? ?????',
        y: 10.38
    }, {
        name: '??????!',
        y: 4.77
    }, {
        name: '??????!',
        y: 0.91
    }, {
        name: '?????!',
        y: 0.2
    }],
}],

});

示例在这里https://jsfiddle.net/NabiKAZ/h4kv0t9v/4/

在plotOption加useHTML: true,

叉小提琴

    plotOptions: {
    pie: {
        allowPointSelect: true,
        cursor: 'pointer',
        dataLabels: {
            enabled: true,
            y: -5, //Optional
            format: '\u202B' + '{point.name}', // \u202B is RLE char for RTL support
            style: {
                fontSize: '15px',
                fontFamily: 'tahoma',
                textShadow: false, //bug fixed IE9 and EDGE
            },
            useHTML: true,
        },
        //showInLegend: true,
    },
},