nunit3-vs-adapter: Tests using TestCaseSource will not run in adapter

Maybe this is more of a question, are they supposed to be able to run in VS Test Explorer?

I see the tests listed under “Not Run Tests” and they even display the value of the parameters in TestCaseSource. But seemingly no way to run them. I noticed they run fine with the console runner (dotnet test).

I do not have the VS extension adapter installed, running everything from nuget packages.

Barebones sample

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <TargetFramework>netcoreapp1.1</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.0.0" />
    <PackageReference Include="NUnit" Version="3.6.1" />
    <PackageReference Include="NUnit.ConsoleRunner" Version="3.6.1" />
    <PackageReference Include="NUnit3TestAdapter" Version="3.8.0-alpha1" />
  </ItemGroup>

  <ItemGroup>
    <Service Include="{82a7f48d-3b50-4b1e-b82e-3ada8210c358}" />
  </ItemGroup>
  
</Project>

using System;
using NUnit.Framework;

namespace TestCaseSourceFails
{
    [TestFixture]
    public class Tests
    {
        [Test]
        public void NormalTest()
        {
            Assert.Pass();
        }

        public static Guid GetRandomGuid()
        {
            return Guid.NewGuid();
        }

        private static readonly Guid Test1Guid = GetRandomGuid();

        private static readonly Object[] RandomGuidSource = new Object[]
            {
                new Object[] { Test1Guid }
            };

        [TestCaseSource(nameof(RandomGuidSource))]
        public void TestCaseSourceTest(Guid testGuid)
        {
            // never runs in vs test adapter
            // but will run fine in console runner
            Assert.Fail();
        }
    }
}