Stylus (Lenovo Active Optical Pen) used for scrolling in Flash CS6

This has already became annoying, and this has being on my nerves lately, but when I try to draw using the pencil and/or brush tool, instead of drawing, I can tell its trying to scroll because the scrollerbars are moving. 

I've checked:

 - that I have not been drawing with 0% alpha

 - that drivers are up to date

 - that some other app is not messing strokes

 - that other Adobe apps respond (Illustrator does)

I've tried:

 - reinstalling drivers

 - reinstalled Flash

If you do not know what I mean, see my video here: https://www.youtube.com/watch?v=HIx_5h6slA8

Please reply in English, or tell me if you cannot access the video because of restrictions. I understand Chinese as well 🙂