For me the issue is that when I launch Dorico, it remembers if I had headphones plugged in last time, rather than sensing the current state. It is easily solved by plugging & unplugging the headphone. (And when I do, I sometimes find notes hanging over, which I can silence by starting and stopping playback.)
I’m pretty sure this has been brought up elsewhere, but I just wanted to add it here in case it applies in the OP’s situation. Is anyone else still experiencing the same thing?