[Windows] Key event processing hung after typing character using AltGr

Hi,
In the demo application Flutter Folio for desktop (https://flutter.gskinner.com/#g-download) there is a serious problem, to enter the login in the application I had to type the character @, when it is pressed @ you can no longer continue typing, the problem is that it interferes in all windows and no longer you can type in any of the windows apps, only the ENTER key works ...
Pressing characters in Notepad causes a line break.
You need to restart your computer for the keyboard to work properly again.
Spanish keyboard.
Windows 10 20H2
Check out the following video: https://recordit.co/pQTePNDduz
Regards,
Jose

@Josua2012
this issue should probably be addressed in flutter-folio' s repo
if you believe the issue is caused by flutter please provide your flutter doctor -v, your flutter run -v
and a minimal reproducible code sample

@Josua2012
Tried your code sample on Windows 10 desktop with spanish keyboard enabled and typed @, but didn't see the crash.

What spanish keyboard settings do you have ? I select the espanyol keyboard, not sure if any other setting is required ?

Also provide your flutter doctor -v.

Keeping this issue open for further investigation.

@GGMMAAIILL

We still have problems with the same buttons, unfortunately.

Problem 1 - (AltGr Button): I typed "[email protected]" on the login form, and what I got is "johndoe@@GGMMAAIILL..ccoomm". Once I press the "AltGr" button, it starts to type every character twice. To fix it, I need to press the AltGr button again.

Problem 2 - (Left Ctrl Button): Same here, once I press the left Ctrl button, it starts to type every character twice. To fix it, I need to press LCtrl button again.

My Flutter doctor logs:

Flutter (Channel master, 2.4.0-1.0.pre.208, on Microsoft Windows [Version 10.0.19042.1083], locale en-US)
• Flutter version 2.4.0-1.0.pre.208 at C:\src\flutter

• Upstream repository https://github.com/flutter/flutter.git

• Framework revision d2057d50c4 (74 minutes ago), 2021-07-13 11:01:03 -0700

• Engine revision 07d04041d5

• Dart version 2.14.0 (build 2.14.0-301.0.dev)
For your information.

Thanks for your helps in advance.

Thanks for the report. I don't think I've seen this issue when I was testing (I just use a text field), so can you provide a minimal example?

════════ Exception caught by services library ══════════════════════════════════
The following assertion was thrown during a platform message callback:
Attempted to send a key down event when no keys are in keysPressed. This state can occur if the key event being sent doesn't properly set its modifier flags. This was the event: RawKeyDownEvent#80cf2(logicalKey: LogicalKeyboardKey#00037(keyId: "0x50000000037", keyLabel: "Numpad 7", debugName: "Numpad 7"), physicalKey: PhysicalKeyboardKey#700e2(usbHidUsage: "0x000700e2", debugName: "Alt Left")) and its data: Instance of 'RawKeyEventDataWindows'
'package:flutter/src/services/raw_keyboard.dart':
Failed assertion: line 666 pos 7: 'event is! RawKeyDownEvent || _keysPressed.isNotEmpty'

[√] Flutter (Channel master, 2.4.0-1.0.pre.212, on Microsoft Windows [VersiÃ³n 10.0.19042.1083], locale es-PY)
[!] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
X cmdline-tools component is missing
Run path/to/sdkmanager --install "cmdline-tools;latest"
See https://developer.android.com/studio/command-line for more details.
[√] Chrome - develop for the web
[√] Visual Studio - develop for Windows (Visual Studio Community 2019 16.8.5)
[√] Android Studio (version 4.1.0)
[√] VS Code (version 1.58.1)
[√] Connected device (3 available)

the ERROR PERSIST

@MarcoGolin

@MarcoGolin I believe that is a different issue. Can you file a new issue to describe this bug, including how to reproduce?

@dkwingsmt

@dkwingsmt You can find the example code here ( https://github.com/imariman/login_form_bug_example ). Once you press either AltGr or LCtrl buttons, you can easily see the problem.

Hope this helps,
Thanks.

@dkwingsmt

AltGr + Q combination still has some problems. :) Once I try to type "[email protected]", it types double "@" like "johndoe@@gmail.com". @dkwingsmt

For your information.
Thanks for your helps in advance.

[√] Flutter (Channel master, 2.5.0-6.0.pre.57, on Microsoft Windows [Version 10.0.19042.1110], locale en-US)

@imariman

@imariman The engine hasn't been rolled into Flutter yet. Can you check back again in a few hours?

It works correctly now, thank you.

Problem in Linux. Altgr + @ sequenced by Ctrl (left)+@

════════ Exception caught by services library ══════════════════════════════════
A KeyUpEvent is dispatched, but the state shows that the physical key is pressed on a different logical key. If this occurs in real application, please report this bug to Flutter. If this occurs in unit tests, please ensure that simulated events follow Flutter's event model as documented in HardwareKeyboard. This was the event: KeyUpEvent#34b0b(physicalKey: PhysicalKeyboardKey#7001f(usbHidUsage: "0x0007001f", debugName: "Digit 2"), logicalKey: LogicalKeyboardKey#00032(keyId: "0x00000032", keyLabel: "2", debugName: "Digit 2"), character: null, timeStamp: 26:51:57.783000) and the recorded logical key LogicalKeyboardKey#00040(keyId: "0x00000040", keyLabel: "@", debugName: "At")
'package:flutter/src/services/hardware_keyboard.dart':
Failed assertion: line 444 pos 16: '_pressedKeys[event.physicalKey] == event.logicalKey'

==========

flutter doctor -v
[✓] Flutter (Channel master, 2.5.0-7.0.pre.105, on Linux Mint 19.2 4.15.0-153-generic,
locale pt_BR.UTF-8)
• Flutter version 2.5.0-7.0.pre.105 at /home/valmor/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision a2e33de (9 hours ago), 2021-08-16 22:51:16 -0700
• Engine revision 7dc8eba
• Dart version 2.15.0 (build 2.15.0-15.0.dev)

[✓] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
• Android SDK at /home/valmor/Android/Sdk
• Platform android-30, build-tools 29.0.3
• ANDROID_HOME = /home/valmor/Android/Sdk
• Java binary at: /usr/lib/jvm/java-8-openjdk-amd64/bin/java
• Java version OpenJDK Runtime Environment (build
1.8.0_292-8u292-b10-0ubuntu1~18.04-b10)
• All Android licenses accepted.

[✓] Chrome - develop for the web
• Chrome at google-chrome

[✓] Linux toolchain - develop for Linux desktop
• clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final)
• cmake version 3.10.2
• ninja version 1.8.2
• pkg-config version 0.29.1

[!] Android Studio (not installed)
• Android Studio not found; download from
https://developer.android.com/studio/index.html
(or visit https://flutter.dev/docs/get-started/install/linux#android-setup for
detailed instructions).

[✓] VS Code (version 1.59.0)
• VS Code at /usr/share/code
• Flutter extension version 3.25.0

[✓] Connected device (2 available)
• Linux (desktop) • linux • linux-x64 • Linux Mint 19.2 4.15.0-153-generic
• Chrome (web) • chrome • web-javascript • Google Chrome 92.0.4515.131

! Doctor found issues in 1 category.

@valmorflores

@valmorflores Thank you, can you open a separate new issue so that it's easier to track?

It works correctly now, thank you.

Is the flutter-team-archive/engine#27921 PR on the stable branch or only on the master branch?
I was checking this with the 2.2.3 stable branch but still encountering this behaviour.

@C4s4r

@C4s4r
Currently it seem to be available on master. Once the new stable version releases, you'll see this fix in it.

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

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[Windows] Key event processing hung after typing character using AltGr #78005

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[Windows] Key event processing hung after typing character using AltGr #78005

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iapicca commented on Mar 12, 2021

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darshankawar commented on Mar 16, 2021

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dkwingsmt commented on Jul 13, 2021

MarcoGolin commented on Jul 13, 2021

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imariman commented on Jul 13, 2021

imariman commented on Aug 11, 2021

dkwingsmt commented on Aug 11, 2021

imariman commented on Aug 12, 2021

valmorflores commented on Aug 17, 2021

dkwingsmt commented on Aug 17, 2021

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