Blizzard has announced that Rogues who defeated Deathwing before the recent Hotfix can now receive their missed Fragment of Deathwing’s Jaw.
Fangs of the Father Guide – Cataclysm Classic
Cataclysm Classic.
Any detailed steps you believe should be taken to reproduce the issue: I finished the 2nd to last quest in the rogue legendary dagger chain (collect 60 clusters) in raid tonight.