Breadcrumbs redirect to wrong level when multiple series are assigned to single category

[bm64]

Expected behaviour

Breadcrumbs should redirect to correct level.

Actual behaviour

When multiple series are assigned to single category, breadcrumbs redirects to wrong level. The issue occurs only when axis labels are used to drilldown - when points are used to drilldown, breadcrumbs navigation works correctly.

Live demo with steps to reproduce

https://jsfiddle.net/BlackLabel/7yzt8dL4/
Steps:

• Click on Animals category
• Click on Cats category
• Click on Animals breadcrumb

Product version

Highcharts v10.0.0

Affected browser(s)

N/A