Showing NaN in date time x-axis

[cola119]

Bug report

Related: #1448 (comment)
Thank you for your development. We fixed #1448 on v3.19.3.

Codepen

https://codesandbox.io/s/gracious-varahamihira-tbl4t?file=/src/index.js

Explanation

However, It still shows NaN when the total value of the second series is zero.

This is because we can't get the correctactiveIndex of the second series because of total !== 0 condition.
https://github.com/apexcharts/apexcharts.js/blob/master/src/modules/tooltip/Utils.js#L177-L184

I don't think this condition(total !== 0) is necessary, do you?

[junedchhipa]

I checked it and it seems it's not necessary now as it is similar to the previous condition which we removed (seriesHaveSameValues) in the last PR.
I will remove this too.

[cola119]

Thanks!