Single-file (PublishSingleFile) executable not supported

[CCRcmcpe]

Use PublishSingleFile (docs) and run the published app I get this exception:

 ---> System.NotSupportedException: CodeBase is not supported on assemblies loaded from a single-file bundle.
   at System.Reflection.RuntimeAssembly.get_CodeBase()
   at System.Configuration.ClientConfigPaths..ctor(String exePath, Boolean includeUserConfig)
   at System.Configuration.ClientConfigPaths.GetPaths(String exePath, Boolean includeUserConfig)
   at System.Configuration.ClientConfigurationHost.get_ConfigPaths()
   at System.Configuration.ClientConfigurationHost.GetStreamName(String configPath)
   at System.Configuration.ClientConfigurationHost.get_IsAppConfigHttp()
   at System.Configuration.Internal.DelegatingConfigHost.get_IsAppConfigHttp()
   at System.Configuration.ClientConfigurationSystem..ctor()
   at System.Configuration.ConfigurationManager.EnsureConfigurationSystem()
   --- End of inner exception stack trace ---
   at System.Configuration.ConfigurationManager.EnsureConfigurationSystem()
   at System.Configuration.ConfigurationManager.PrepareConfigSystem()
   at System.Configuration.ConfigurationManager.GetSection(String sectionName)
   at System.Configuration.ConfigurationManager.get_AppSettings()
   at NHibernate.Cfg.StaticConfigurationManagerProvider.GetLoggerFactoryClassName()
   at NHibernate.NHibernateLogger.GetNhibernateLoggerClass()
   at NHibernate.NHibernateLogger.LogWrapper..cctor()
   --- End of inner exception stack trace ---
   at NHibernate.NHibernateLogger.LogWrapper.get_LoggerFactory()
   at NHibernate.Cfg.Environment..cctor()
   --- End of inner exception stack trace ---
   at NHibernate.Cfg.Configuration.Reset()
   at NHibernate.Cfg.Configuration..ctor(SettingsFactory settingsFactory)
   at NHibernate.Cfg.Configuration..ctor()
   at FluentNHibernate.Cfg.Fluently.Configure()

After looking around the methods in the stack trace, I found a solution:
Set ConfigurationProvider.Current = null before you BuildSessionFactory, this will prevent NHibernate from trying to load appsettings. Somewhat confusing because you usually don't use appsettings with Fluent NHibernate.