Original issue: aspnet/Logging#858

As far as I understood from reading EventLog implementation it relies on EventLogMessages.dll file that shipped with the desktop framework and doesn't ship as part of .net core resulting in the message resource is present but the message is not found in the string/message table message being prepended to all event logs in event viewer.

Additionally EventLog.CreateEventSource(string, string) would create event source pointing to EventLogMessages.dll inside shared directory (C:\Program Files\dotnet\shared\Microsoft.NETCore.App\2.1.0\EventLogMessages.dll) that doesn't exist.