Spiderweb/Windrose/Radar charts not displaying all x labels

[IgorFIE]

Expected behaviour

Given: I have a spiderweb chart
When: I enable useHTML on the chart labels
Then: I should see all labels on the spiderweb chart

Actual behaviour

It is only drawing half of the labels.
This also happens in windrose and Polar (radar) chart

Live demo with steps to reproduce

https://jsfiddle.net/panintelligence/kqt0r9w1/

Product version

We updated from 7.2.0 to 8.1.0 and the problem started to appear.
This is also a problem in the last version

[pawelfus]

Thank you for reporting the issue @IgorFIE

Broken since v8.1.0, up to v8.0.4 it was fine.

Internal note:
Bisect fails. Just a guess, but might be connected: 94a2263 - @PaulDalek could you check it?

[PaulDalek]

Hi @IgorFIE,

In a nutshell, the xOffset variable used for calculating a label's x position is NaN when useHTML is set to true. As for now you can use a simple workaround which prevents NaN in calculation.

Workaround

https://jsfiddle.net/BlackLabel/zmah2swf/

[IgorFIE]

Hi @pawelfus and @PaulDalek ,

For now we decided to downgrade to 8.0.4 until there's a version with the fix.
I'll keep an eye on this issue.

Thanks.