Windows Performance Analyzer (WPA) is not resolving symbols

I've listed my question on stackoverflow.  Please see details there.  https://stackoverflow.com/questions/50342191/windows-performance-analyzer-wpa-is-not-resolving-symbols

Here is a summary.  I've got a simple C# .NET Framework console application.  I profiled it using WPRUI and loaded it into WPA (I'm using version 10.0.16299.91).  I've verified that a number of things worker (symchk finds symbols, symcache entry is made, wpa opens the symcache entry when "Load Symbols" is clicked), but the UI remains stubborn and does not show the symbols for my C# application, but for the OS it seems to show everything just fine.

Any help on this would be greatly appreciated.

Thanks!