Error saving @Model with enum

Hey,

I am trying to save an enum in my model with SwiftData but getting a weird error message I do not understand at the moment, and I am pretty sure I am missing something here.

public enum URLScheme: String, Codable {
  case https
  case http
}

@Model
public class MyModel {
  public var urlScheme: URLScheme
}

When I try to save the model I get the following error message in the console:

error: Row (pk = 1) for entity 'MyModel' is missing mandatory text data for property 'https'

I was wondering if I need to tell SwiftData how to save my enum ? My assumption was that I can save any enum if it conforms to Codable. Am I doing something wrong here or is this a beta bug ?

Thanks a lot for helping