The Stagnant Oasis (can not complete)

[regneq]

I completed the quest and the quest journal says "complete". But yet Tonga Runetotem Question Mark is greyed out. and will not let me complete it.

[Uccello]

I couldn't reproduce this. Try dropping the quest and pick it up again.

[billy1arm]

@regneq - Please could you try the steps mentioned above and confirm whether this is still an issue ?