Automapper 7.0.1 ProjectTo mismatch types with ef core 2.1.1 linq join

Question

Full exemple in Console application gist

I have some entities with readonly property that is calculated.

This is my Automapper mapping config to calculate the property.

cfg.CreateMap(t, t).ForMember(nameof(ITestInterface.IsReadOnly), opt => opt.MapFrom(src => ((ITestInterface)src).OrganizationUnitId == ((ITestInterface)src).TenantId));

And this is a simple query that throws exception

var simpleQuery = from super in context.SuperEntities.AsQueryable().ProjectTo<SuperEntity>()
                          join other in context.OtherSuperEntities.AsQueryable().ProjectTo<OtherSuperEntity>() on super.Id equals other.SuperEntityId
                          select new { super.IsReadOnly, other.OtherSuperDescription };
        var simpleResult = simpleQuery.ToList();

I got an InvalidOperationException: An exception occurred while reading a database value for property 'OtherSuperEntity.Id'. The expected type was 'System.Int64' but the actual value was of type 'System.Boolean'.

Is this an issue of automapper? They just closed my issue