StyleCop.json not loaded when using .slnx solution format (VS 18.5.2)

[ScottGurvey]

I’m using Visual Studio 18.5.2 with StyleCop.Analyzers 1.2.0-beta.507. I ran into an issue where StyleCop.json is never loaded, even when placed at the repo root and referenced via Directory.Build.props using:

<AdditionalFiles Include="StyleCop.json" />

Symptoms:

• StyleCop always uses the default placeholder header (Company, etc.)
• StyleCop.json shows a red X in Solution Explorer
• Adding <None Include="StyleCop.json" /> does not help
• Removing/re-adding the file does not help
• The file is located at the repo root and all projects are under /src
• Directory.Build.props is definitely being evaluated for other settings

I attempted to create a classic .sln solution to test whether the issue was specific to .slnx, but Visual Studio 18.5.2 repeatedly generated a nested folder and a new .slnx file instead. I was not able to get Visual Studio to generate a .sln solution at all, so I cannot confirm whether .sln would have resolved the issue.

At this point I removed StyleCop.Analyzers from the project, but I wanted to report the behavior in case .slnx is not fully supported or if there is a known limitation with AdditionalFiles or StyleCop.json under the new solution format.

[bjornhellander]

I am unable to reproduce this.

If your config file is in the root and projects are under src/, then shouldn't it look like this:
<AdditionalFiles Include="..\..\stylecop.json"/>