At audio files, allowedExtensions is not working properly

[KY-Jung]

Describe the bug
I want to filter audio files (only mp3 files).
When I use a code like allowedExtensions: [ 'mp3' ],
m4a, m4r, mp3 files are displayed.
So strange.

Platform

• [ v ] Android

Platform OS version
Pixel 4a API 33 (Android Emulator)

How are you picking?
FilePickerResult? result = await FilePicker.platform.pickFiles(
//type: FileType.audio,
type: FileType.custom,
allowedExtensions: [ 'mp3' ],
);

Flutter Version details
flutter doctor -v
[√] Flutter (Channel stable, 3.19.0, on Microsoft Windows [Version 10.0.19045.4046], locale ko-KR)
• Flutter version 3.19.0 on channel stable at C:_util\flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision bae5e49bc2 (7 days ago), 2024-02-13 17:46:18 -0800
• Engine revision 04817c99c9
• Dart version 3.3.0
• DevTools version 2.31.1

[√] Windows Version (Installed version of Windows is version 10 or higher)

[√] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
• Android SDK at C:\Users\Michael\AppData\Local\Android\sdk
• Platform android-34, build-tools 34.0.0
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 11.0.12+7-b1504.28-7817840)
• All Android licenses accepted.

[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe

[√] Visual Studio - develop Windows apps (Visual Studio Community 2019 16.11.29)
• Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
• Visual Studio Community 2019 version 16.11.33927.289
• Windows 10 SDK version 10.0.19041.0

[√] Android Studio (version 2021.2)
• Android Studio at C:\Program Files\Android\Android Studio
• 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 11.0.12+7-b1504.28-7817840)

[√] IntelliJ IDEA Community Edition (version 2023.3)
• IntelliJ at C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2023.3.4
• Flutter plugin version 78.1.1
• Dart plugin version 233.13763.5

[√] VS Code (version 1.76.1)
• VS Code at C:\Users\Michael\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.60.0

[√] Connected device (4 available)
• sdk gphone x86 64 (mobile) • emulator-5554 • android-x64 • Android 13 (API 33) (emulator)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19045.4046]
• Chrome (web) • chrome • web-javascript • Google Chrome 121.0.6167.185
• Edge (web) • edge • web-javascript • Microsoft Edge 121.0.2277.128

[√] Network resources
• All expected network resources are available.

• No issues found!

[github-actions]

This issue is stale because it has been open for 14 days with no activity.

[github-actions]

This issue was closed because it has been inactive for 14 days since being marked as stale.

[melWiss]

same here, there's a real issue with the MimeType thing