I’ve finished every quest in the campaign except ‘Arjani, the ruby commander’. This includes the scalebane quest which is apparently closely associated with it.
The log tells me to bring back the head of Arjani to Zerrick in Maj’Elka, but when I talk to him he only gives me the ‘you are now looking at the new leader of the scalebane’ speech, where I can click through some dialogue, but the quest does not complete. The silver quest icon remains over his head.
I tried restarting the game, but this did not work. I think something broke somehow because I’ve read you need to complete this before the scalebane quest.