Autocomplete does not dismiss overlay on selection

[StraussPorcupine]

The bug happens when you use autocomplete, and the user fills in the same value as what is recommended and the user clicks on the recommended value, if it is the same as the filled value, it will not dismiss the overlay.

Steps to Reproduce

This bug is on any Autocomplete widget
Even on the Api.flutter.dev

1. Go to https://api.flutter.dev/flutter/material/Autocomplete-class.html
2. Run the first example.
3. in the input field type in 'aardvark'
4. click on the recommended answer that is the same

Expected results:
The expected result is the overlay to dismiss.

Actual results:
Overlay stays, and nothing happens, the material splash happens, but it does not close the overlay.

[maheshj01]

Hi @StraussPorcupine, Thanks for filing the issue. I am able to reproduce the issue on stable and the master channel. Basically, this issue occurs if the AutoCompleteField contains exactly one of the options in the list then the options cannot be submitted.

code sample

import 'package:flutter/material.dart';

void main() => runApp(const AutocompleteExampleApp());

class AutocompleteExampleApp extends StatelessWidget {
  const AutocompleteExampleApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Autocomplete Basic'),
        ),
        body: const Center(
          child: AutocompleteBasicExample(),
        ),
      ),
    );
  }
}

class AutocompleteBasicExample extends StatelessWidget {
  const AutocompleteBasicExample({Key? key}) : super(key: key);

  static const List<String> _kOptions = <String>[
    'aardvark',
    'bobcat',
    'chameleon',
  ];

  @override
  Widget build(BuildContext context) {
    return Autocomplete<String>(
      optionsBuilder: (TextEditingValue textEditingValue) {
        if (textEditingValue.text == '') {
          return const Iterable<String>.empty();
        }
        return _kOptions.where((String option) {
          return option.contains(textEditingValue.text.toLowerCase());
        });
      },
      onSelected: (String selection) {
        debugPrint('You just selected $selection');
      },
    );
  }
}

flutter doctor -v (mac)

[✓] Flutter (Channel stable, 2.10.3, on macOS 12.1 21C52 darwin-arm, locale en-GB)
    • Flutter version 2.10.3 at /Users/mahesh/Documents/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 7e9793dee1 (20 hours ago), 2022-03-02 11:23:12 -0600
    • Engine revision bd539267b4
    • Dart version 2.16.1
    • DevTools version 2.9.2

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /Users/mahesh/Library/Android/sdk
    • Platform android-31, build-tools 31.0.0
    • ANDROID_HOME = /Users/mahesh/Library/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6916264)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.2.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • CocoaPods version 1.10.2

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

[✓] Android Studio (version 4.2)
    • 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 11.0.8+10-b944.6916264)

[✓] IntelliJ IDEA Community Edition (version 2021.2.1)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    • Flutter plugin version 61.2.4
    • Dart plugin version 212.5080.8

[✓] VS Code (version 1.63.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.36.0

[✓] Connected device (3 available)
    • Redmi K20 Pro (mobile) • 192.168.1.5:5555 • android-arm64  • Android 11 (API 30)
    • macOS (desktop)        • macos            • darwin-arm64   • macOS 12.1 21C52 darwin-arm
    • Chrome (web)           • chrome           • web-javascript • Google Chrome 99.0.4844.51

[✓] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

[✓] Flutter (Channel master, 2.11.0-0.0.pre.715, on macOS 12.1 21C52 darwin-arm, locale en-GB)
    • Flutter version 2.11.0-0.0.pre.715 at /Users/mahesh/Documents/flutter_master
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 8b95cd6f35 (7 hours ago), 2022-02-28 16:31:12 -0800
    • Engine revision 615a60512c
    • Dart version 2.17.0 (build 2.17.0-150.0.dev)
    • DevTools version 2.11.1

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /Users/mahesh/Library/Android/sdk
    • Platform android-31, build-tools 31.0.0
    • ANDROID_HOME = /Users/mahesh/Library/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6916264)
    • All Android licenses accepted.

[!] Xcode - develop for iOS and macOS (Xcode 13.2.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    ! CocoaPods 1.10.2 out of date (1.11.0 is recommended).
        CocoaPods is used to retrieve the iOS and macOS platform side's plugin code that responds to your plugin usage on
        the Dart side.
        Without CocoaPods, plugins will not work on iOS or macOS.
        For more info, see https://flutter.dev/platform-plugins
      To upgrade see https://guides.cocoapods.org/using/getting-started.html#installation for instructions.

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

[✓] Android Studio (version 4.2)
    • 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 11.0.8+10-b944.6916264)

[✓] IntelliJ IDEA Community Edition (version 2021.2.1)
    • IntelliJ at /Applications/IntelliJ IDEA CE.app
    • Flutter plugin version 61.2.4
    • Dart plugin version 212.5080.8

[✓] VS Code (version 1.63.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.34.0

[✓] Connected device (4 available)
    • Redmi K20 Pro (mobile) • 192.168.1.2:5555                     • android-arm64  • Android 11 (API 30)
    • iPhone 13 Pro (mobile) • CBEF6BFA-D3DC-4680-8900-E01C62A4B04C • ios            •
      com.apple.CoreSimulator.SimRuntime.iOS-15-2 (simulator)
    • macOS (desktop)        • macos                                • darwin-arm64   • macOS 12.1 21C52 darwin-arm
    • Chrome (web)           • chrome                               • web-javascript • Google Chrome 98.0.4758.109

[✓] HTTP Host Availability
    • All required HTTP hosts are available

! Doctor found issues in 1 category.