[FormBuilderSignaturePad]: isDirty always true

[SherpaMiguel]

Is there an existing issue for this?

• I have searched the existing issues

Package/Plugin version

9.1.1

Platforms

• Android
• iOS
• Linux
• MacOS
• Web
• Windows

Flutter doctor

Flutter doctor

[✓] Flutter (Channel stable, 3.16.0, on macOS 14.1.1 23B81 darwin-arm64, locale es-ES)
    • Flutter version 3.16.0 on channel stable at /Users/miguel/bin/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision db7ef5bf9f (13 days ago), 2023-11-15 11:25:44 -0800
    • Engine revision 74d16627b9
    • Dart version 3.2.0
    • DevTools version 2.28.2

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.1)
    • Android SDK at /Users/miguel/Library/Android/sdk
    • Platform android-34, build-tools 33.0.1
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 15.0.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 15A507
    • CocoaPods version 1.13.0

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

[✓] Android Studio (version 2022.3)
    • 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 17.0.6+0-17.0.6b829.9-10027231)

[✓] VS Code (version 1.84.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.56.0

[✓] Connected device (4 available)
    • SM A125F (mobile)               • R58R54D6Y3K               • android-arm64  • Android 12 (API 31)
    • iPhone de Miguel Angel (mobile) • 00008110-000414892152401E • ios            • iOS 17.1.1 21B91
    • macOS (desktop)                 • macos                     • darwin-arm64   • macOS 14.1.1 23B81 darwin-arm64
    • Chrome (web)                    • chrome                    • web-javascript • Google Chrome 119.0.6045.159

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

• No issues found!

Minimal code example

Code sample

FormBuilderSignaturePad(
  name: 'signature',
  onSaved: (v) {
    print(v);
  },
),

Current Behavior

Field is always in dirty state

Expected Behavior

Dirty should be only true when fields value has changed

Steps To Reproduce

1. Copy the example field to a working form
2. Submit form and check that 'signature' field is dirty although you don't touch anything.

Aditional information

No response