[chart viz][time series bar chart] Rich tooltip is not highlighted when hover on series and not able to scroll

[jinghua-qa]

In time series bart chart, Rich tooltip is not highlighted when hover on series and not able to scroll when there is long series.

Expected results

Rich tooltip can show highlight when hover on series, and able to scroll with long series

Actual results

Rich tooltip not able to show highlight when hover on series, and able to scroll with long series.

Screenshots

Screen.Recording.2021-08-10.at.11.37.49.AM.mov

How to reproduce the bug

1. Go to time series bar chart
2. add multiple metrics (5-10)
3. hover over on each series and observe tooltip
4. See error

Environment

(please complete the following information):

• superset version: latest master
• python version: python --version
• node.js version: node -v
• any feature flags active:

Checklist

Make sure to follow these steps before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.

Additional context

Add any other context about the problem here.

[jinghua-qa]

@junlincc

[junlincc]

Screen.Recording.2021-08-11.at.7.31.50.PM.mov

@stephenLYZ can you take this one on? the rich tooltip should be scrollable and hovering on specific series should get highlighted 🙏

[stephenLYZ]

working on it