A bug in AdditionalFile.GetText (fixed in dotnet/roslyn#6596) can cause thread pool explosions which result in long delays (UI hangs) when analyzers are enabled in Visual Studio. We currently use this method in SettingsHelper to read the stylecop.json file. As a workaround prior to this bug being fixed, we should investigate the use of an alternative approach (e.g. File.ReadAllText based on AdditionalFile.Path).