I have a .NET 5.0 application I would like to analyze with dotnet-counters. Following Debug a memory leak in .NET Core, I am able to list its PID in the normal ways:

C:\MyServer>dotnet-counters ps
      1164 myserver C:\MyServer\Debug\myserver.exe

C:\MyServer>dotnet-trace ps
      1164 myserver C:\MyServer\Debug\myserver.exe

However, when I try to monitor its counters, it just hangs:

C:\MyServer>dotnet-counters monitor --refresh-interval 1 -p 1164

Press p to pause, r to resume, q to quit.
    Status: Waiting for initial payload...

My application is special in that it is hosted inside a native 64-bit EXE using the hostfxr_* API.

Otherwise, the application is working fine. I'm on Windows 10, using SDK v5.0.100-preview.8.20417.9. All of the dotnet-* tools are the latest versions from dotnet tool install.

Is there something special required to enable counters?