This repo is a sample WebExtension demonstrating a bug in Firefox's chrome.notifications.onClicked behavior. It generates a single notification on load, and registers a handler that clears the notification when it is clicked. It also clears the notification automatically after ten seconds.

Sample Output

If the notification is clicked within ten seconds, it is never cleared (even after the ten seconds are up), and the following output is shown in the console:

Notification created: some-notification-id
All notifications after create: Object { "some-notification-id": {…} }
Notification clicked
All notifications on click: Object {  }
Clearing notification
Cleared? false
Timeout reached, clearing notification
All notifications after timeout: Object {  }
Cleared? false

If the notification is not clicked witin ten seconds, it is cleared automatically, and the following output is shown in the console:

Notification created: some-notification-id
All notifications after create: Object { "some-notification-id": {…} }
Timeout reached, clearing notification
All notifications after timeout: Object { "some-notification-id": {…} }
Notification closed
Cleared? true
All notifications after close: Object {  }

This demonstrates that if the notification is clicked, it is no longer returned by chrome.notifications.getAll and can no longer be cleared.