WindowsFormsIntegration DRT and related microsuites failing.

.NET Core Version: (e.g. 3.0 Preview1, or daily build number, use dotnet --info)
Windows version: (winver)
Does the bug reproduce also in WPF for .NET Framework 4.8?: Yes/No
Is this bug related specifically to tooling in Visual Studio (e.g. XAML Designer, Code editing, etc...)? If yes, please file the issue via the instructions here.
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Problem description: WindowsFormsIntegration DRT and related microsuites failing.

Actual behavior: Sample app “HostingWfWithVisualStyles.exe” crash both on 19H1 x86 and x64 OSes

Expected behavior: DRTs and Microsuites related to WindowsFormsIntegration shouldn't fail, They should pass.

Minimal repro: Checkout main branch and run cmd: RunDrts.cmd /Area="WindowsFormsIntegration" /Name="DrtWindowsFormsIntegration()"

dotnet / wpf