Yes, that is strange .... But if you click twice on the alerts button, it should still take you to a page which shows a list of alerts. Maybe try that, as a workaround.Why do my alerts disappear when I haven't logged on to check them? In this case, I was watching a thread, so I got an email notification. But when I logged on, no red bubble notification or history of the alert. Seems to me everything that I haven't checked should stay there until I log on and read it.