How to debug a dotnet 5 application that doesn't launch on Mac?

[iamphi]

I have a Cocoa, dotnet 5 application that won't launch a particular iMac (2015 model, Big Sur). This Cocoa application is signed and notarized. I tried to make a simple command line dotnet 5 application that just print a message on the command line and it also doesn't work. This command line application is signed; I don't remember notarizing it or not. Both applications are self-contained distributions.

The application's open files list is very sparse. I would expect a lot more files, especially from the dotnet 5 runtime.

Similarly with sampling the application. The call stack is way sparse.

The best hint of something not going right is using dtruss but I haven't found anything to help my program to run