VS debugger hangs when clicking on any button in WinformsControlsTest

[WPMGPRoSToTeMa]

Description

Clicking on any button in WinformsControlsTest application causes the Visual Studio debugger to hang.

cc: @dreddy-work, @RussKie.

Reproduction Steps

1. Clone dotnet/winforms repository.
2. Open the repository folder in the VS developer command prompt.
3. Open the solution by start-vs command.
4. Choose WinformsControlsTest as the current project on the toolbar.
5. Start debugging (F5).
6. Click on any button on the form or press Enter.

Expected behavior

The application and the debugger should not hang.

Actual behavior

The application hangs. The debugger cannot be stopped gracefully, VS suggests to force stop it:

Regression?

Caused by dotnet/winforms@9d3c2f8 (dotnet/winforms#6727).

Known Workarounds

Running without debugging helps. The debugger can be attached later, but clicking on any button causes a hang.

Configuration

• Windows 10 Enterprise, 21H2, 19044.1526.
• Tried on Any CPU/x86/x64.

Other information

No response

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Issue Details

---

Description

Clicking on any button in WinformsControlsTest application causes the Visual Studio debugger to hang.

cc: @dreddy-work, @RussKie.

Reproduction Steps

1. Clone dotnet/winforms repository.
2. Open the repository folder in the VS developer command prompt.
3. Open the solution by start-vs command.
4. Choose WinformsControlsTest as the current project on the toolbar.
5. Start debugging (F5).
6. Click on any button on the form or press Enter.

Expected behavior

The application and the debugger should not hang.

Actual behavior

The application hangs. The debugger cannot be stopped gracefully, VS suggests to force stop it:

Regression?

Caused by dotnet/winforms@9d3c2f8 (dotnet/winforms#6727).

Known Workarounds

Running without debugging helps. The debugger can be attached later, but clicking on any button causes a hang.

Configuration

• Windows 10 Enterprise, 21H2, 19044.1526.
• Tried on Any CPU/x86/x64.

Other information

No response

Author:	WPMGPRoSToTeMa
Assignees:	-
Labels:	area-Diagnostics-coreclr, untriaged
Milestone:	-

[tommcdon]

@WPMGPRoSToTeMa Thanks for reporting this issue! I am not able to reproduce the issue locally. Would you mind opening a Visual Studio Feedback Item and upload dumps of the debugger and WinformsControlsTest app?

[willibrandon]

I’m running into the same issue. I’ve been unable to debug for several weeks.

[tommcdon]

@WPMGPRoSToTeMa would you mind trying to disable Intellitrace in Visual Studio to see if it works around the issue? I believe that this issue is actually a Visual Studio problem and is tracked on Devdiv internal bug #'s 1495188 and 1495179.

[dreddy-work]

@WPMGPRoSToTeMa would you mind trying to disable Intellitrace in Visual Studio to see if it works around the issue?

I tried with disabling Intellitrace and it works as expected after that.

[hoyosjs]

Closing as an external issue.