When you finish an activity on your Apple Watch, have you noticed that when you receive and dismiss a Health notification on the summary screen, your activity disappears? You're not alone. This can also occur while tracking an activity. This is a pesky bug and if you write to firstname.lastname@example.org with "Apple Watch: Health Notification Bug" in the subject line, we'll be sure to keep you updated when we have any news. In the meantime, some users have elected to disable these notifications on their Watch. If you like, you can do so by opening the Watch app on your phone, then tapping Notifications->Activity, and disabling the Goal Completions toggle.
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