The 1.8.6 tarball and Debian package both fail to run. It looks like prior versions had the required .NET runtime dependency included but 1.8.6 is missing them.
$ OpenTracker
You must install .NET to run this application.
App: /usr/share/OpenTracker/OpenTracker
Architecture: x64
App host version: 8.0.11
.NET location: Not found
Learn more:
https://aka.ms/dotnet/app-launch-failed
Download the .NET runtime:
https://aka.ms/dotnet-core-applaunch?missing_runtime=true&arch=x64&rid=linux-x64&os=debian&apphost_version=8.0.11