Stacked area chart with null value render incorrectly after redraw

[beelit94]

Expected behaviour

showing gap for the null value after redraw with data contain null value

Actual behaviour

the area chart connected and didn't show any gap.
And the result is different than first create chart with the same data

Live demo with steps to reproduce

https://jsfiddle.net/q73odptz/

Affected browser(s)

chrome Version 62.0.3202.94 (Official Build) (64-bit)

[sebastianbochan]

Hi @beelit94
It looks like the issue is caused by stacking param. Without it it behaves properly.

[beelit94]

@sebastianbochan indeed. Would you able to suggest any workaround for this other than destroy the chart?