I recently found a bug while I was leveling Rufus' Fury (Adept), that was granted from Pantheon. If you deepsight the weapon for you to be able to level the weapon before selecting the masterwork, this grants you a deepsighted Adept Root of Nightmares weapon with zero masterwork benefits. Even if you go to the Enclave to select the frame of the Adept weapon, you get no choice to put in a masterwork of any kind, therefore, you get no masterwork along with the additional weapons stats you get when you level up the weapon past 17-18. If you guy picked up any Craftable or Enhanceable raid adepts before applying the masterwork, PLEASE apply your masterwork before deepsighting the weapon, or else you'll end up like me. (Screenshot above)