Steps to reproduce

Can be reproduced easily by displaying a new set of markers.

Expected results

New markers are displayed and old markers are removed/hidden.

New markers have custom tap handling.

Actual results

New markers and some old markers are displayed.

New markers have custom tap handling.

Old markers have default top handling.

Code sample

[Paste your code here]

Screenshots or Video

Logs

[Paste your logs here]

Flutter Doctor output

[✓] Flutter (Channel stable, 3.32.5, on macOS 15.5 24F74 darwin-arm64, locale en-AU) [252ms]
• Flutter version 3.32.5 on channel stable at /Users/Luke.Shan/development/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision fcf2c11 (2 weeks ago), 2025-06-24 11:44:07 -0700
• Engine revision dd93de6
• Dart version 3.8.1
• DevTools version 2.45.1

[✓] Android toolchain - develop for Android devices (Android SDK version 36.0.0) [859ms]
• Android SDK at /Users/Luke.Shan/Library/Android/sdk
• Platform android-36, build-tools 36.0.0
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
This is the JDK bundled with the latest Android Studio installation on this machine.
To manually set the JDK path, use: flutter config --jdk-dir="path/to/jdk".
• Java version OpenJDK Runtime Environment (build 21.0.6+-13391695-b895.109)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 16.4) [490ms]
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 16F6
• CocoaPods version 1.16.2

[✓] Chrome - develop for the web [8ms]
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2025.1) [8ms]
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 21.0.6+-13391695-b895.109)

[✓] VS Code (version 1.101.2) [7ms]
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension can be installed from:
🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected device (3 available) [5.7s]
• AppTester’s iPhone 12 (mobile) • 00008101-001C38D20EF1003A • ios • iOS 17.6.1 21G93
• macOS (desktop) • macos • darwin-arm64 • macOS 15.5 24F74 darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 138.0.7204.93

[✓] Network resources [404ms]
• All expected network resources are available.

• No issues found!