Chrome does not close notification

Question

I am currently using this implementation to use browser-based notifications:
https://developer.mozilla.org/en-US/docs/Web/API/Notification

It works like a charm.

if ("Notification" in window) {
        if(Notification.permission === "granted") {
            if($('#notify-on-message').is(':checked')) {
                var notification = new Notification(username + ' : ' + data, {'icon': "/custom/favicon.gif"});
            }
            if ($('#notify-on-hl').is(':checked')) {
                var patt = new RegExp("(^|\\W)"+selfusername+"(\\W|$)");
                if(patt.test(data)) {
                    var notification = new Notification(username + ' highlighted you.', {'icon': "/custom/favicon.gif"});
                }
            }
        }
    }

The main problem I'm experiencing is that in Chrome-based browsers, the notification simply does not close after a 3 second delay.
He tried to add this aftervar notification = ...

setTimeout(function() {
    notification.close();
}, 2000);

Although this does not change anything. The notice remains.
Is this a known issue? Is there an easy way to fix this behavior that I don't want?

EDIT 1: According to this page:
https://developer.mozilla.org/en-US/docs/WebAPI/Using_Web_Notifications
This is a known issue:

. Firefox Safari , . 4 .

-, Notification.close(), , :

var n = new Notification("Hi!");
n.onshow = function () { 
    setTimeout(n.close, 5000); 
}

. , , close - .

Answer 1

,

var message_notification = new Notification("Data");
setTimeout(function(){
    message_notification.close();
}, 3000); 

Firefox, Chrome. ( Safari , )