hiddenDates选项导致项目重叠几天

Question

我正在使用hiddenDates选项隐藏周末，但是此选项会使周末之后的某些项目与前一天重叠。

Screen Shot

我将vis v4.21.0与这些项目和这些选项一起使用。

var items = new vis.DataSet([
    {"id":"1","start":'2019-07-25',"end":'2019-07-26'},
    {"id":"2","start":'2019-07-26',"end":'2019-07-27'},
    {"id":"3","start":'2019-07-29',"end":'2019-07-30'},
    {"id":"4","start":'2019-07-30',"end":'2019-07-31'},
    {"id":"5","start":'2019-07-31',"end":'2019-07-32'},
]);

var options = {
    template: function(){
        return `<h4>Some title</h4>
                <p>Some Name</p>
                <strong>Some Time</strong>`
    },
    hiddenDates:{
        start: "2019-07-27",
        end: "2019-07-29",
        repeat: "weekly",
    },
    moment: function(date) {
        return vis.moment(date).utc();
    },
};

更改日期格式不能解决问题。