Hi guys!
DEMO: https://jsfiddle.net/Cortez/51xup06d/
I am using Highcharts 8.2.0 in my app, and can not upgrade anytime soon.
Click on "Update Legend" button and you will see how all columns merge into stacks
This must be related somehow to 'centerInCategory' option, because when set to 'false', the problem does not reproduce.
However, this issue is fixed in later versions (on current version it doesn't reproduce).
So, the question is - can you please share some kind of polyfill wrapper or something, for I could compliment my outdated library version with a fix for this issue, without having to do an upgrade right now.
Thanks!