Data label flyouts are not shown in the HTML5 Pie Chart correctly

Situation:

You designed a pie/donut chart but in the output you sometimes don't see the flyouts for the data labels in the resulting export. How to avoid this problem?

Solution:

Try to set the plotOptions.pie.dataLabels.connectorPadding property to a higher value. Start at 3 and increase or decrease based on your requirement. To set the property: right click on the chart -> Edit Chart Properties -> Chart formatting tab -> Press Show Advanced Properties and navigate to plotOptions->pie->dataLabels and set the value to connectorPadding