Go to definition not working in VSCode

[Borja Garcia de Vinuesa]

I'm trying to use go to definition shortcut in Codespaces' VSCode but it doesn't have the expected outcome. By default, the keyboard combination was set to cmd+F12. That was not working so I change the shortcut. Still didn't work. Any ideas how to make this work or under what conditions will/will not work?

Thank you.