If you have a Reminders notification badge in your Dock that is stuck, even though you have no pending alerts, you can fix it. The trick is to restore from your iCloud backup. This resets the notifications for Reminders and clears the bogus number.
▶ You can also watch this video at YouTube.
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▶ Watch more videos about related subjects: Reminders (20 videos).
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▶ Watch more videos about related subjects: Reminders (20 videos).




I've had the same issue on iOS mail lasting a few days and then disappearing. Not certain what eliminated it.