Notification widget replace function doesn't work as expected

Use the following code in a JSX:

var notification;
for (i = 0; i < 10; i++) {
  if (i == 0) {
    notification = new XWiki.widgets.Notification('In progress', 'inprogress');
  } else {
    notification.replace(new XWiki.widgets.Notification('Done', 'done'));
  }
}

Expected result: Have only one notification displayed. Initial value In progress, then replaced by Done for 9 times.
Actual result: 9 Done notifications are displayed at the same time. Only the first replace works. See multipleNotifications.png