I’m not sure if this is a bug with this project, or WCF, but this somehow breaks the reflection for user.GetService<CreativeService>(); resulting in something like this:
MissingMethodException: Constructor on type 'Google.Api.Ads.AdManager.v202308.CreativeService' not found.
4.10.3 does not have that issue. I didn’t actually need that reference any longer (this was a service that started life as a .NET Framework 4 WCF Service), but as I just spent 2 hours debugging this weird issue, I thought it should at least be mentioned somewhere.