Hi Folks

We are adding some restricting some block types to certain content areas and have followed the guide https://docs.developers.optimizely.com/content-management-system/docs/restricting-content-types-in-properties, specifically the section 'Restrict based on base classes and interfaces'. 

We have created an interface  

public interface IFullWidthComponent : IContentData
{
}

and UIDescriptor

[UIDescriptorRegistration]
public class FullWidthComponentUiDescriptor : UIDescriptor<IFullWidthComponent>
{

}

Applied it to the required blocks

public class HeaderPromoBannerBlock : BlockData, IFullWidthComponent

and the required content areas.

[AllowedTypes(AllowedTypes = new[] { typeof(IContent) }, RestrictedTypes = new[] { typeof(IFullWidthComponent) })]
public virtual ContentArea? MainContentArea { get; set; }

The blocks are now restricted as intended, which is perfect. However the content area is now showing the following message underneath - Of the listed restricted types, only the two HomePage Hero and the Header Promo should be listed.  In fact these are the only ones which are actually being restricted as the feature works fine aside from this. Is this a known issue and is there a work around to fix it?