There’s a minor error after doing the initial quests of the Gilneas story (“Aderic’s Report” and “A Crusade of Red”).
When approaching Genn to turn them in, he says “Ah, you are here. Good” with his… “growly” voice and obviously being in his Worgen form, but the voice clips that play when interacting with him (“Hail, Champion”, “For country, for family”, “You have my attencion”, “We will have justice for the fallen”, etc) use the human voice, making them sound a little out of place.