In the area around Canach’s Lair and in Canach’s lair itself(at least, that’s where I’ve mostly been since the update, could happen elsewhere) the audio for the UI keeps turning off. All the other audio is fine(except for the voiceovers in the Canach’s Lair SP mode, as other people have said), but I can’t hear the “whoosh” of opening up a window, or the victory sound when completing the missions, or the click noise when clicking on NPCs.
It started happening on today’s update.