.net standard class library - not support Distributed Transaction error

I developed a logging service in .net standard class library project. It is perfectly working without System.Transaction (TransactionScope class).
When I add transaction to a process, logger insert method throws an exception. [This platform does not support distributed transactions.]

When I add code to core console app with System.Transaction it works.

Is .net standard not supporting System.Transaction(TransactionScope)?

NOTE: For now : .net core and nugets are lastest.

• Distribution Transaction Coordinator service is working,
• EF Core version: 2.1.0 preview2-final,
• Class library versions .NET Standard 2.0
• AspNetCore 2.0.5

Edit:
I realized that exception throws when I try to open second connection in same database with in the same TransactionScope block. post