Treegraph dataLabels allowOverlap: false not working

[jakubjanuchta]

Expected behaviour

When setting treegraph.dataLabels.allowOverlap: false, the labels should disappear when overlapping.

Actual behaviour

When setting treegraph.dataLabels.allowOverlap: false, the labels don't disappear when overlapping.

Live demo with steps to reproduce

https://jsfiddle.net/BlackLabel/t1kwr5b4/

Product version

Highcharts v11.1.0

Affected browser(s)

All