Individual tray notification with delay not working

Hi,
I am trying to display a trayinfo like message but just in the center instead. It looks like setDelayMsec is not working.

Notification notifyMsg = new Notification("", Notification.Type.TRAY_NOTIFICATION);
            notifyMsg.setHtmlContentAllowed(true);
            if (title != null && !title.isEmpty()) notifyMsg.setCaption(title);
            if (text != null && !text.isEmpty()) notifyMsg.setDescription(text);

            if (showCentered)
                notifyMsg.setPosition(Position.MIDDLE_CENTER);
            else
                notifyMsg.setPosition(Position.BOTTOM_RIGHT);

            notifyMsg.setDelayMsec(3000);
            if (text.length() > 40) notifyMsg.setDelayMsec(5000);
            if (text.length() > 120) notifyMsg.setDelayMsec(7000);

            notifyMsg.show(Page.getCurrent());

What can be the problem here? I get the message displayed until I click on it. I am using vaadin 7.6.8.

It looks like this is working if I do not use debugging mode in NetBeans stopping around there. So just seems to be an issue while in debug mode. So it's ok.