I connected my UX-1 again since some years ago, because my presonus has some weird noise on the inputs. But I have the issue now on the UX-1 that whenever I connect the headphones it will play through the speakers and headphones together, but I remember it normally should mute the speakers whenever I use the headphones.
Anyone else has this problem and how can this be solved? I am using win 10, drivers are 4.2.7.7.