[Quest Bug] The Marvelous Mun-Tuy Bean

Quest: The Marvelous Mun-Tuy Bean
Time: Any time.
Frequency: All the time.
World name: Gilgamesh
Character name: Halys Mansickle
NPC name: Erimmont and Aedoc
Class/Level: Any Class, Level 26+
Party or solo: Both.
In-game time: Any time.
Area and coordinates: South Shroud (27,16)
Steps:
1. Pick up The Marvelous Mun-Tuy Bean from Aedoc in Quarrymill.
2. Go to Erimmont in The Mun-Tuy Cellars.
3. Speak with Erimmont.

The quest simply says to speak with Erimmont. Doing so yields no results. I get the quest window to pop-up, but the Complete button is disabled. Only the Decline button is enabled. There is no error text or red text anywhere. The quest appears as completed in my log and shows as a green check mark in all locations (map, above the NPC, and in the log and tracker). I have tried switching classes, forfeiting the quest and repicking the quest, logging in and out, clearing game cache, logging in from a different location and different machine. Nothing seems to work.

I have no idea how my character got into this situation. I have been playing since Open Beta. I leveled to 50 as a conjurer/white mage first, then I got to this quest as an arcanist and the problem was discovered. I have since leveled a thaumaturge to the same level and still cannot hand-in this "completed" this quest.

I have reported the bug in-game, weeks ago, but have since not gotten a response or a solution to the problem.

Greetings Mansickle,

Thank you for posting your concerns about Erimmont and "The Marvelous Mun-Tuy Bean" quest. I have made sure to submit all of your information to the development team and they will thoroughly investigate this matter, based on your report. Unfortunately, I cannot guarantee that a direct response will be posted on this thread, but I do recommend checking Here or Here for any details regarding the development team's investigation. Thanks again for your report!

Regards,
Xetyline