macOS allows you to change the Touch Bar to traditional function keys when you run specific applications. I have tried to do so with VirtualBox, and it works on the main VirtualBox window properly. The only issue is that when I launch a virtual machine, those settings lose their effect. The reason is that VirtualBox launches a differently-named executable file (from within its app bundle) in order to run the virtual machine in a separate process.
So, the question is: Is there a way to set up macOS to show the function buttons when running a virtual machine in VirtualBox (e.g. Linux or Windows)?