Drag and drop feature in split packed bubble chart stopped working after update

[kamil-musialowski]

After the 10.2.1 update, drag and drop functionality is no longer working in our demos for split packed bubble charts.

Last working version - 10.2.0

Live demo with steps to reproduce

Click on any point and try to drag it
https://jsfiddle.net/BlackLabel/eo9xbcrk/

Product version

Highcharts 10.2.1
Highcharts More 10.2.1

[karolkolodziej]

Bisected to 31a08d3 FYI @bre1470