public/libraries.js
function () {
            var chart = charts[hoverChartIndex];
            if (chart) {
                chart.pointer.reset();
                chart.pointer.chartPosition = null; // also reset the chart position, used in #149 fix
            }
        }
function () {
            var chart = charts[hoverChartIndex];
            if (chart) {
                chart.pointer.reset();
                chart.pointer.chartPosition = null; // also reset the chart position, used in #149 fix
            }
        }
function ( ) { var chart = charts [ hoverChartIndex ] ; if ( chart ) { chart . pointer . reset ( ) ; chart . pointer . chartPosition = null ; // also reset the chart position, used in #149 fix } }
When mouse leaves the container, hide the tooltip.
When mouse leaves the container hide the tooltip .