marker's position don't follow the series when highstock chart is scrolling

[sylaince]

Expected behaviour

create a highstock chart with two serieses, when mouse over marker and tooltip will display, don't move the mouse and all the markers are following the movement of the series when chart is scrolling

Actual behaviour

one of the markers didn't follow the movement of its series
screenshot: https://i.stack.imgur.com/L8FJZ.jpg

Live demo with steps to reproduce

https://jsfiddle.net/sylaince/fz7cv853/3/
put your mouse over the top right or bottom right area of the chart would help reproducte the problem.

Product version

Highstock-6.1.0

Affected browser(s)

Chrome 66.0.3359.139

[pawelfus]

Hi @sylaince

Thank you for reporting this bug. You are right, both markers should follow last hovered point, the same way it works for just one series: https://jsfiddle.net/BlackLabel/fz7cv853/6/

Workaround:
Update states by plugin: https://jsfiddle.net/BlackLabel/fz7cv853/11/

Plugin:

(function(H) {
  H.wrap(H.Pointer.prototype, 'reset', function(proceed, allowMove, delay) {

    proceed.call(this, Array.prototype.slice.call(arguments, 1));

    if (this.chart.tooltip && allowMove && this.chart.hoverPoints) {
      H.each(this.chart.hoverPoints, function(hoverPoint) {
        hoverPoint.setState(hoverPoint.state, true);
      });
    }
  })
})(Highcharts)

Internal note:
Only hoverPoint gets it's state refreshed, not all hoverPoints.

[sylaince]

It's completely resolved, thanks for your awesome work!

[pawelfus]

Thank you!

Let's keep this open - I think this should be fixed in the core.

[sylaince]

That will be great!

[pawelfus]

Internal note:
Just an idea of a fix. Still test needed, no PR yet. Tested on: http://jsfiddle.net/BlackLabel/76BuG/8/ and http://jsfiddle.net/BlackLabel/76BuG/7/