dataLabels bug in HC 6.2.0?

[drmrbrewer]

I think this must relate to changes made to add the new feature "Added support for multiple data labels on each single point" in 6.2.0.

I'm getting the error:

Uncaught TypeError: Cannot read property 'options' of undefined

The problem occurs in the following bit of HC code:

each(dataLabels, function (label) {
    var options = label.options; // <---- label is undefined here
    // ...
});

Problem occurs when we somehow get to that part of the code with point.dataLabels being an array including one defined element and another undefined element: [H.SVGElement, undefined].

Problem seems to be confined to areasplinerange type (probably any range type), and can be reproduced in the following jsfiddle:

https://jsfiddle.net/jbhgkze2/

[pawelfus]

Hi @drmrbrewer

Thanks for reporting the issue. You are right, it used to work in v6.1: https://jsfiddle.net/BlackLabel/jbhgkze2/5/

Workaround:
Instead of returning null in formatter, return empty string: https://jsfiddle.net/BlackLabel/2pq3fzhg/

[drmrbrewer]

I tried returning blank strings already, but the problem is that I am using boxes around the labels, so they appear around the blank labels... see https://jsfiddle.net/2pq3fzhg/1/. Reverting to previous version is fine for now