Using the Highcharts example posted here , how can you make sure that the Awesome font icons will be located exactly in the middle of the data point, for example, native characters / markers? It is called the so-called in the data series and uses the "plugin", which is located in the same Fiddle:
marker: {
symbol: 'text:\uf183' // fa-male
}
Using this example, if you turn the series on / off several times or zoom in / out, the icons are no longer visually accurate, often displayed above the actual coordinate. In the image below, you assume that the data point was> 50 based on the icon.

Their SVGRenderer example here does not seem to be executed.