Nicholas

Same issue with the interface [System.ServiceModel.Channels.IMergeEnabledMessageProperty](https://github.com/dotnet/wcf/blob/v6.2.0-rtm/src/System.ServiceModel.Primitives/src/System/ServiceModel/Channels/IMergeEnabledMessageProperty.cs). Can be easily reproduced with the following test: ```csharp using System.ServiceModel.Channels; using Xunit; namespace ServiceModelPrimitives; public class ServiceModelPrimitivesTests { [Fact] public void UsingHttpRequestMessageProperty_ShouldCompile() {...

> So, it's really wierd This doesn't compile `[CS7069] Reference to type 'IMergeEnabledMessageProperty' claims it is defined in 'System.ServiceModel.Primitives', but it could not be found` > > ```cs > var...