zIndex for @google/markerclusterer icons is too large

Description

Contributor guide

Tech stack

javascript

Domain

frontend

Issue type

bug

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

2

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 understanding of Google Maps marker clustering

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

70

Research direction

First, locate the markerclusterer source code in the repository, likely in `src/markerclusterer` or similar. The issue is that the zIndex of cluster icons is set too high, causing them to appear on top of other map elements. Look for where the `zIndex` property is assigned to cluster icons (e.g., in the `render` method of `ClusterIcon`). Consider reducing the value or making it configurable. Check existing comments or maintainer responses for guidance.