On 3d column chart, labels are overlapping

[marklofdahl]

Expected behaviour

Labels should not overlap

Actual behaviour

Labels do overlap

Live demo with steps to reproduce

https://jsfiddle.net/marklofdahl/8mq7d6ww/

1. When initial chart loads, notice that "Amazon" and "Fruits" overlap. If you drilldown and back up, "Amazon" is wrapped to the next line and no longer overlaps.

2. Drilldown into any series (especially the Animals), and notice that some of the labels overlap quite a bit.

Product version

Highstock 6.1.0

Affected browser(s)

Firefox, chrome, possibly others

Any workaround would be appreciated. Sometimes in the past I could get things to not overlap by forcing an extra redraw of the chart, but that is not helping in this case. The 1) "Amazon" overlap is annoying but not too bad, but the 2) overlaps make the labels unreadable.

[Denyllon]

Partially the problem has been fixed by commits from #8042, but there are still problems with axis slotWidth while using drilldown module.