Tooltip has low z-index

Description

Contributor guide

Tech stack

javascriptcsshtml

Domain

frontend

Issue type

bug

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

1

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

under 1 hour

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

clear

Prerequisites

basic CSS

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

90

Research direction

This issue is a simple z index fix. Check the tooltip component's CSS (likely in a file like Tooltip.js or styles.css). Ensure the z index is higher than the chart's z index. Review comments for any hints. No linked PRs, so it's available.