Area chart series toggling issue introduced in 4.1.0

[mrash]

Description

In 4.1.0, series toggling in area charts with larger numbers of values causes the browser tab to crash and/or become unresponsive. I have isolated this problem with an area chart that includes only what is needed - two series and attempting to toggle one of them - to reproduce this issue in this codepen.io link.

Steps to Reproduce

1. Load this codepen.io link.
2. Observe that there are two series labeled "Series1" and "moving_avg_100D" respectively, and that the initial render of the graph is fine.
3. Now, use the mouse to select the "moving_avg_100D" series from the legend and then try to toggle it with a click. This results in the browser tab crashing.

Expected Behavior

The expected behavior is to toggle (hide) the series labeled "moving_avg_100D". In versions prior to 4.1.0, this toggling behavior works fine, but appears to be broken in 4.1.0.

Actual Behavior

Upon trying to toggle the "moving_avg_100D" series, the browser tab crashes.

Screenshots

For version 4.1.0, the initial render of the area chart including both series works fine:

Now, highlight the "moving_avg_100D" series via the legend below the chart and click it (try to toggle or hide it) and observe that the browser tab crashes and codepen becomes unresponsive:

For versions prior to 4.1.0 (I've tested with every version going back to 3.53.0), the correct functionality works with the "moving_avg_100D" series successfully toggled:

If you want the raw data as a gist, then use the "ap_area_2series.html" file in this gist. Also, as a side note, if the "hidden" attributed is set to "true" (toggled by default) in the "moving_avg_100D" series, then the page does not render at all under 4.1.0 and the browser tab crashes. This is demonstrated by the "ap_area_2series_hidden.html" file in the same gist. This file is identical to the "ap_area_2series.html" file except that the "hidden" attribute is set to "true" for the "moving_avg_100D" series.

Reproduction Link

https://codepen.io/michael-rash/pen/JoPXaOw

[mrash]

Ok, I have started using codepen.io now. Here is the reproduction link in codepen.io:

https://codepen.io/michael-rash/pen/JoPXaOw