...Desktop CLR debugging has limited support. Support for project.json and csproj projects on Windows, macOS and Linux. .NET Framework builds of OmniSharp no longer ship with Mono or the MSBuild tooling (See announcement omnisharp-roslyn#2339). To ensure that the C# extension remains usable out of the box for .NET SDK projects, we have changed the default value of omnisharp.useModernNet to true.