Series color changes on drillup when colorByPoint is false

[jonathandixon]

Expected behaviour

When returning to the top level series after drilldown the color of the top level series should be the same as the initial color.

Actual behaviour

When returning to the top level series after drilldown the color of the top level series cycles to the next color. This occurs when the colorByPoint option is not set or false.

Live demo with steps to reproduce

https://jsfiddle.net/cxywousb/

Product version

Highcharts 11.1.0

Affected browser(s)

Chrome, Firefox, Safari

[bm64]

Hello @jonathandixon and thanks for reporting the issue.

Seems to work correctly in v11.0.1: https://jsfiddle.net/BlackLabel/e1dLfcar/

Internal note:
Bisected to 003fc20