Cannot Complete Campaign Quest: Controlled Demolition in the Ringing Deeps

Hello,

I’m having issues completing the Controlled Demolition quest in the Ringing Deeps.

The quest objective is to kill 18 Skardyn, but when I do so and try to turn it in to Magni, the option to complete the quest is grayed out.

After reloading and trying again, the button is no longer grayed out, but when I click it, it says I don’t meet the requirements for the quest and goes back to being grayed out.

I abandoned the quest and tried to accept it again, but it did not show up in my quest log, and a world quest with the same name and objective popped up in my tracker, even though I’m not level 80.

I completed the new quest because Magni showed I had one in progress despite no tracker, but when it was complete I had the same issue as before.

EDIT:
Not entirely sure what was the cause, but I think it may have been the addon Dialog UI (which changes the Dialog window).

This issue has been resolved (hopefully).