On Linux if program exits when read_char() is blocking, the terminal will stay in raw mode

Problem

Run the following code on Linux with console v0.15.7:

use std::{thread, time::Duration};

fn main() {
    println!("(This program will exit in 5 seconds.)");
    println!("Press any key, and the program will echo the key you pressed.");

    thread::spawn(|| {
        let terminal = console::Term::stdout();
        loop {
            let key_pressed = terminal.read_char().unwrap();    // ← Blocking
            println!("You pressed: {}", key_pressed);
        }
    });

    thread::sleep(Duration::from_secs(5));
    panic!("After the program exits, the terminal will stay in raw mode.")
}

After the program exits, the terminal will stay in raw mode. Anything I type in shell does not display on screen.

Related issues

• https://github.com/console-rs/console/issues/36
• https://github.com/console-rs/console/issues/136

Start by running the provided Linux reproduction with console v0.15.7 and observe the terminal after the process exits while read_char() is blocked. Read related issues 36 and 136, then trace the terminal raw-mode handling; done means the shell displays typed input normally after the program exits.