I never see this mentioned, but one of the things I hate most about open offices is having people always looking at my screen. To be clear, I don't waste much

I never see this mentioned, but one of the things I hate most about open offices is having people always looking at my screen. To be clear, I don't waste much time. Does this bother any one else as much as it gets to me? Regardless of what I'm doing, I'm not comfortable being constantly observed doing it. I previously worked in an open office where the manager would basically creep up on people, walking quietly throughout the office and looking to see who was doing what. Creepy as all get-out.