Highcharts skipping shared tooltip points for large data sets - highcharts

Question

Seems like Highcharts is skipping a few data points in the shared tooltip for high number of data points (2500+).
I am trying to render a dual axis chart with 2500+ data points for 4 series - using Highcharts. I am also using a shared tooltip option to render my custom tooltip html. But at times Highcharts skips 1 or 2 data points in the tooltip. For example, when I slowly hover over each of the points from left to right, then I am supposed to see '1st April' after '31st March'. But instead, I see '2nd April'. Is it a bug? Or am I missing something? (I have verified that all the dates are present in the categories passed to the Highcharts.)
tooltip: {
borderColor: '#ccc',
backgroundColor: 'transparent',
borderWidth: 0,
shadow: false,
shared: true, //show all series values together
useHTML: true,
// hideDelay: 50000,
formatter: function() {
if (props.config.type == 'pie') {
return 'Value : ' + this.y;
} else {
let html = '<div class="fixed-tooltip">';
html += formatTooltipDate(this.x);
if (this.points &&
this.points.length > 1 &&
props.config.type != "combination") { //multiple series*(see note below)
//*combination series are having 1 point, so handled in the else section as single series.
let dateIndex = props.config.data.categories.indexOf(this.x);
console.log(" date ", this.x);
console.log(" dateIndex ", dateIndex);
if (props.config.type == "dual") {
let dualAxisTitles = props.config.dualAxisTitles;
html += formatDualSeriesTooltipData(this.x, dateIndex, this.points, dualAxisTitles);
} else {
html += formatMultiSeriesTooltipData(this.x, dateIndex, this.points);
}
} else { //single series
//for combination charts have a custom tooltip logic
if (props.config.type == "combination") {
let dateIndex = props.config.data.categories.indexOf(this.x);
html += formatMultiSeriesTooltipData(this.x, dateIndex, props.config.data.series);
} else {
let seriesColor = this.points[0].point.series.color;
let seriesName = this.points[0].point.series.name;
let value = this.points[0].y;
html += formatSingleSeriesTooltipData(value);
}
}
html += '</div>';
return html;
}
}
}
Expected to see a tooltip for "1st April" data point, after "31st March". Instead seeing tooltip for "2nd April" data point.

Answer 1

The points are skipped if there is no enough space for them in the plot area (1px for 1 point). The solution is to set a adequate chart width:
chart: {
width: 1000
},
Live demo: http://jsfiddle.net/BlackLabel/yjk0ta43/
API: https://api.highcharts.com/highstock/chart.width