Tooltip not visible on truncated labels

[sosharma1403]

I'm submitting a ... (check one with "x")

• [x] bug report - search github for a similar issue or PR before submitting
• [ ] feature request
• [ ] support request - use StackOverflow (add the ngx-charts tag) or the gitter chat for support questions

Current behavior Tooltip not visible on labels.

Expected behavior On hover tooltip should be visible

Reproduction of the problem https://swimlane.github.io/ngx-charts/#/ngx-charts/pie-chart

• ngx-charts version: 9.0.0

• Angular version: 6.1.0

• Browser: all

• Language: all

[2manoj1]

Any update on this issue.

[mrdedede]

Any news?