Hot restart seems broken after upgrading to Flutter 3.7.0

[savadodesigns]

Steps to Reproduce

1. Create a fresh repo with flutter
2. flutter run -d chrome
3. Make some changes in code
4. Save
5. Waiting for connection from debug service on Chrome...

When I downgrade to 3.3.10 everything works fine.

[MiguelSOliveira]

same issue here.. no error output

[huycozy]

Hi @savadodesigns
Flutter web currently supports hot restart but not hot reload (see reference). Are you facing this issue on hot restart?

I tried reproducing this issue on a newly created project (on the latest stable 3.7.0) but didn't see it. Can you provide the complete output of flutter run -v?

And please also provide the output of flutter doctor -v as well. Thanks!

@MiguelSOliveira it would be better if you could provide such information.

[stenlee]

@huycozy I can confirm this issue. It happens for HOT RESTART

[DaggeDaggmask]

Same issue here, on Both Intellj and VSCode.
For my entire team.

Waiting for connection from debug service on Chrome...

[stenlee]

@huycozy details to reproduce - be sure you change the source code before you apply hot restart. When no changes are available, a hot restart works as expected. When the source code has been changed between reloads - it's dead.

[savadodesigns]

Hi @huycozy, you can find the logs below:

`flutter run -v`

Performing hot restart...
[+33583 ms] Skipping target: gen_localizations
[   +2 ms] Skipping target: gen_dart_plugin_registrant
[        ] Skipping target: _composite
[        ] complete
[  +15 ms] Scanned through 641 files in 13ms
Waiting for connection from debug service on Chrome...
[        ] <- recompile org-dartlang-app:/web_entrypoint.dart 2a8ee7b5-f8e6-4e63-a7f6-01e7ed14dd33
[        ] package:clairify_routing/header.dart
[        ] <- 2a8ee7b5-f8e6-4e63-a7f6-01e7ed14dd33
[ +253 ms] Synced 0.0MB.
[        ] <- accept
[   +1 ms] DwdsVmClient: Attempting a hot restart
[        ] DwdsVmClient: Attempting to disable breakpoints and resume the isolate
[   +2 ms] DwdsVmClient: Successfully disabled breakpoints and resumed the isolate
[        ] DwdsVmClient: Attempting to get execution context ID.
[        ] DwdsVmClient: Got execution context ID.
[        ] DwdsVmClient: Issuing $dartHotRestartDwds request
[  +14 ms] ChromeProxyService: Destroying isolate
[        ] BatchedExpressionEvaluator: Closed
[ +761 ms] DwdsVmClient: $dartHotRestartDwds request complete.
[        ] DwdsVmClient: Waiting for Isolate Start event.
[  +15 ms] ChromeProxyService: Destroying isolate
[        ] ChromeProxyService: Destroying isolate

`flutter doctor -v`

[✓] Flutter (Channel stable, 3.7.0, on macOS 12.6.2 21G320 darwin-x64, locale nl-NL)
    • Flutter version 3.7.0 on channel stable at /Users/samvandoorn/Projects/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision b06b8b2710 (4 days ago), 2023-01-23 16:55:55 -0800
    • Engine revision b24591ed32
    • Dart version 2.19.0
    • DevTools version 2.20.1

[✓] Android toolchain - develop for Android devices (Android SDK version 32.0.0-rc1)
    • Android SDK at /Users/samvandoorn/Library/Android/sdk
    • Platform android-33, build-tools 32.0.0-rc1
    • Java binary at: /Library/Java/JavaVirtualMachines/jdk-17.jdk/Contents/Home/bin/java
    • Java version Java(TM) SE Runtime Environment (build 17+35-LTS-2724)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14C18
    • CocoaPods version 1.11.3

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

[!] Android Studio (version 2022.1)
    • 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
    ✗ Unable to find bundled Java version.
    • Try updating or re-installing Android Studio.

[✓] Connected device (2 available)
    • macOS (desktop) • macos  • darwin-x64     • macOS 12.6.2 21G320 darwin-x64
    • Chrome (web)    • chrome • web-javascript • Google Chrome 109.0.5414.119
    ! Error: iPhone is busy: Waiting to connect and unlock the device. Xcode will continue when
      iPhone is finished. (code -10)

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

! Doctor found issues in 1 category.

Not only hot restart is broken, project generation in VSCode and so many other functionalities are broken. save yourself time and downgrade with flutter downgrade command

[ahmednfwela]

I am hitting this issue as well, seems like a MaterialApp.router issue

[japhetobsioma]

I have the same problem, then I look up the last log from flutter run -v which is ChromeProxyService: Destroying isolate here https://github.com/flutter/flutter/issues and I found this issue: #119161

For some reason, if you remove Beamer.setPathUrlStrategy(); (if you are using Beamer), the hot restart will now work.

[ahmednfwela]

unfortunately changing url strategy is a hard breaking change for our customers, since the old urls are in multiple social posts.
I have downgraded to previous version until a hotfix lands on stable (which I wish would be soon)

[japhetobsioma]

unfortunately changing url strategy is a hard breaking change for our customers, since the old urls are in multiple social posts. I have downgraded to previous version until a hotfix lands on stable (which I wish would be soon)

You can do this while you are waiting for the hotfix:

if (kReleaseMode) {
  Beamer.setPathUrlStrategy();
}