Infrared Reciver doesn't work properly after the first signal

Question

i'm trying to play a passive buzzer with an IR reciver

My Code

#include <IRremote.h>
IRrecv irrecv(10);
decode_results results;
void setup() {
 // put your setup code here, to run once:
 Serial.begin(9600);
 pinMode(11, OUTPUT);//buzzer
 irrecv.enableIRIn();//Ir reciver at pin 10
}
int cmdex = 0;
void loop() {
 // put your main code here, to run repeatedly:
 if(irrecv.decode(&results)){
 cmdex = 1;
 Serial.println(results.value);
 unsigned long data = results.value;
 switch(data){
 case 0xFF30CF:
 noTone(11);
 tone(11, 1056);
 break;
 case 0xFF18E7:
 noTone(11);
 tone(11, 571);
 break;
 case 0xFF6897:
 noTone(11);
 break;
 }
 irrecv.resume();
 }
}

Issue

My problem is that if i use any button instead of 1 (FF30CF) 0 (FF6897) or 2 (FF18E7) the serilal port give me the right data, then when i pusch 1 the buzzer starts to play but when i push another button, the data keep changing at every push.

Serial Output FF10EF (here I push 4)

FF38C7 (here I push 5)

FF5AA5 (here I push 6)

FF30CF (here I finally push 1 and the buzzer starts to play)

(then I push 3 times 0, but the output is different from the expected FF6897 and the buzzer doesn't stop)

D965AA42

EB670632

AB03A967

Note

• I'm using the IRremote.h library

• Juraj: does IRremote use Timer2 used by tone()?
• jsotola: as per @Juraj comment ... please refer to stackoverflow.com/questions/62832918/function-tone-and-irremote