Charts.js混合图表steppedLine，点不在中间

Question

今天过得愉快， 我希望黄线从垂直线绘制到垂直线（y轴）。 这样黄线不会在列的中间开始。

https://imgur.com/a/nOO9pNx“情况图片”

   var barChartData = {
        labels: [{!$resSum['sektornazev']}],
        datasets: [{
            label: 'Tolerované',
            backgroundColor: 'blue',
            stack: 'Stack 0',
            data: [{!$resSum['pocNO']}]
        }, {
            label: 'Archiv',
            backgroundColor: 'green',
            stack: 'Stack 0',
            data: [{!$resSum['pocNU']}]
        }, {
            label: 'Netolerované',
            backgroundColor: 'red',
            stack: 'Stack 0',
            data: [{!$resSum['pocND']}]
        },{
            label: 'Cíl',
            backgroundColor: 'yellow',
                            type: 'line',
                            fill: 'end',
                            steppedLine: 'after',
            stack: 'Stack 1',
            data: [{!$resSum['graflimit']}]

        }]

    }; 


  window.onload = function() {
        var ctx = document.getElementById('chartM').getContext('2d');
        window.myBar = new Chart(ctx, {
            type: 'bar',
            data: barChartData,
            options: {
                title: {
                    display: true,
                    text: 'Přehled všech akcí za období {!$obdobi['mesicName']} {!$obdobi['rok']}'
                },
                tooltips: {
                    mode: 'index',
                    intersect: false
                },
                responsive: true,
                scales: {
                    xAxes: [{
                        stacked: true
                                            }],
                    yAxes: [{
                        stacked: true,
                                                    ticks: {
                                                        stepSize: 1
                                                    }
                    }]
                }
            }
        });
    };

所需的结果显示在“最终”部分的所附图像中。