AutoMoq can't generate a mock for a delegate when in the signature of a test method

AutoMoqError.csproj

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

  <PropertyGroup>
    <TargetFramework>netcoreapp2.0</TargetFramework>

    <IsPackable>false</IsPackable>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="AutoFixture" Version="4.6.0" />
    <PackageReference Include="AutoFixture.AutoMoq" Version="4.6.0" />
    <PackageReference Include="AutoFixture.NUnit3" Version="4.6.0" />
    <PackageReference Include="Moq" Version="4.10.1" />
    <PackageReference Include="nunit" Version="3.11.0" />
    <PackageReference Include="NUnit3TestAdapter" Version="3.11.0" />
    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.9.0" />
  </ItemGroup>

</Project>

Tests.cs

using System;
using AutoFixture;
using AutoFixture.AutoMoq;
using AutoFixture.NUnit3;
using Moq;
using NUnit.Framework;

namespace Tests
{
    public class Tests
    {
        [Test, AutoMoqData]
        public void WontWork(Func<string> func, string result)
        {
            Assert.That(func, Is.Not.Null);

            Mock.Get(func).Setup(p => p()).Returns(result);

            var value = func();

            Assert.That(value, Is.EqualTo(result));
        }

        [Test, AutoMoqData]
        public void WillWork(string result)
        {
            Func<string> func = Mock.Of<Func<string>>();

            Assert.That(func, Is.Not.Null);

            Mock.Get(func).Setup(p => p()).Returns(result);

            var value = func();

            Assert.That(value, Is.EqualTo(result));
        }
    }

    public class AutoMoqDataAttribute : AutoDataAttribute
    {
        public AutoMoqDataAttribute() : base(CreateFixture) { }

        private static IFixture CreateFixture()
        {
            var fixture = new Fixture();

            fixture.Customize(new AutoMoqCustomization
            {
                ConfigureMembers = true,
                GenerateDelegates = true
            });

            return fixture;
        }
    }
}