Tokio signal::ctrl_c failing over ssh

Question

My Code currently looks like this:

// spawn threads
let handle_1 = tokio::spawn(...);
let handle_2 = tokio::spawn(...);
// this thread later starts a rocket.rs server
let handle_3 = tokio::spawn(...);

// handle ctrl+c
let h_signal = tokio::spawn(async move {
    match signal::ctrl_c().await {
        Ok(()) => {
            // shutdown
            ...
        }
        Err(_) => {
            // shutdown
            ...
        }
    }

    // save data
    ...

});
let _ = tokio::join!(handle_1, handle_1, handle_1, h_signal);

This code works perfectly on Windows and Linux, but if I run it on a VPS which I connect to with ssh, this code suddenly stops works. By stops working I mean:

1. The rocket.rs server does not start
2. When I hit ctrl+c the program just exits without the shutdown code being called

Anyone got an Idea on why this might happen?