We've identified an issue where if a user is @tagged in a post, then that post is quoted by a different user, then the tagged user will get an alert for the quoted post. FWIW, the plugin we were using before did not fire the secondary alerts. To recreate you'll need three users: User A creates a post tagging User B. User B gets alert saying User A tagged them in a post. User C quotes User A's post User B gets another alert saying User C tagged them in a post. This is undesired as User C really didn't tag User B, they were just responding to User A. It creates unnecessary alerts for User B.