Hot Reload opens `binding.dart` at line 845 on every reload (no errors shown)

[oneebzahid]

Steps to reproduce

1. Create a New Flutter Project with Flutter 3.35
2. Start a Debug Session targetting Chrome in VS Code
3. Trigger a Hot Reload either by clicking Hot Reload button or saving the file
4. Observe that binding.dart file opens up at line 845

Code sample

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: Scaffold(
        body: Center(
          child: Text('Demo App'),
        ),
      ),
    );
  }
}

Flutter version

Flutter 3.35.4 • channel stable • https://github.com/flutter/flutter.git
Framework • revision d693b4b9db (7 days ago) • 2025-09-16 14:27:41 +0000
Engine • hash feee8ee8fb8b975dd9990f86d3bda11e6e75faf3 (revision c298091351) (7
days ago) • 2025-09-15 14:04:24.000Z
Tools • Dart 3.9.2 • DevTools 2.48.0

[biggs0125]

I was unable to reproduce this and we haven't seen any other reports of this issue. Do you happen to have any other VS Code extensions that might be triggering this behavior? Does it happen for hot restarts as well or just hot reloads?

[oneebzahid]

I posted this on StackOverflow and there seems to be one other person encountering the same issue. Here's the link to the form.

As for extensions:

alexisvt.flutter-snippets
circlecodesolution.ccs-flutter-color
dart-code.dart-code
dart-code.flutter
eamodio.gitlens
fwcd.kotlin
get-snippets.get-snippets
github.copilot
github.copilot-chat
jeroen-meijer.pubspec-assist
lyzerk.linecounter
pkief.material-icon-theme
usernamehw.errorlens
vscjava.vscode-gradle

This is what I have, I'll remove them one by one and check if it solves the problem. I'll get back to you in a few hours.

[nshahan]

@oneebzahid
Could you share the configuration you are using for starting the debug session? Is this defined in your launch_config.json file?

[oneebzahid]

Did you mean launch.json?
{
"version": "0.2.0",
"configurations": [
{
"type": "chrome",
"request": "launch",
"name": "Launch Chrome against localhost",
"url": "http://localhost:8080",
"webRoot": "${workspaceFolder}"
},
]
}

[biggs0125]

cc @DanTup in case you've seen this before

[DanTup]

I've not seen this and I'm not able to reproduce.

@oneebzahid your launch config has "type": "chrome" which is not the right thing for starting a Flutter debug session - is that config related to this problem?

Are you able to capture some logs?

• Run the Dart: Capture Debugging Logs command
• Start debugging the app
• Reproduce the issue by clicking the reload button
• Click Cancel on the logging notification to stop logging and open the log
• Remove anything sensitive from the log
• Attach the log here or in a gist

Thanks!

[oneebzahid]

I tried to capture the logs using Dart: Capture Logs, but the problem didn't occur when i did that. Even when I 'cancelled' the log capture, it didn't happen.

But when I restarted the debug session (Started a new instance without log capture or debug). It started happening again.

I'll post the log but my Power just got cut off :(