google-visualization - 谷歌饼图工具提示闪烁

Question

Google饼图工具提示在该特定工具提示上的鼠标悬停事件上不断闪烁，并且在Google Charts工具提示闪烁中没有任何解决方案

<div id="chart" class="gchart" align='center'></div>
<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>

function init() {
    google.charts.load('current', {
        'packages': ['corechart', 'line']
    });
    google.charts.setOnLoadCallback(drawChart);
}

function drawChart() {
    var rankData = [];
    rankData.push(['Task', 'Rank']);
    rankData.push(['1' , 2]);
    rankData.push(['2' , 2]);
    rankData.push(['3' , 2]);
    rankData.push(['4' , 2]);
    rankData.push(['5' , 2]);
    var data = google.visualization.arrayToDataTable(rankData);
    var options = {
        legend: {
            position: 'labeled',
            textStyle: {
                bold: true
            }
        },
        pieSliceText: 'none',
        width: $(window).width() * 0.4,
        height: $(window).height() * 0.7,
        chartArea: {
            width: '85%',
            height: '75%'
        },
        pieSliceBorderColor: "transparent",
    };
    var chart = new google.visualization.PieChart(document.getElementById('chart'));
    chart.draw(data, options);
}