local variables in WinForms projects are not captured by debugger

Created based on this discussion.

.NET version

net6.0-windows; net7.0-windows; net472

V.S.

Microsoft Visual Studio Community 2022
Version 17.4.2
VisualStudio.17.Release/17.4.2+33122.133
Microsoft .NET Framework
Version 4.8.09032

17.4.1 and 17.5.p1 - same behavior.

Windows.

OS Name	Microsoft Windows 11 Home
Version	10.0.22621 Build 22621

Issue description

V.S. Debugger not capturing local variables in any WinForms .Net / .net framework projects. In console projects all are ok: Reset settings and repair installation - nothing helps.

developercommunity issues: https://developercommunity.visualstudio.com/t/Net-local-variables-not-captured-by-deb/10216016 (closed in favor of next one) https://developercommunity.visualstudio.com/t/CS0103-in-the-watch-window-for-local-var/10222843

Steps to reproduce

Any WinForms project.

[Olina-Zhang]

Verified it in different VS versions: cannot repro in 17.3.7 release build and previous versions. Repro in 17.4.2 release build for Winforms .Net Core and .Net framework apps. Doesn’t repro in WPF app.

[Olina-Zhang]

What version of windows did you test on?

My VM is Win10 22H2 with different release Visual Studios installed, from 17.4.2, this issue is reproduced.