Using the amber-demo branch, this code prints bug *and* temp :)
Again this bug was found by Francois Green.
public class SwitchBug {
    
    static String hold(String item) -> switch(item) {
      case String s -> { System.out.println(s); }
      default -> "temp";
    }
    public static void main(String[] args) {
        System.out.println(hold("bug"));
    }
}
Rémi