Answer to "Note 8 Stylus is too sensitive"It was water in the stylus. Dried it in the keep warm (not hot ) oven and it stopped glitching, the phone may be water resistant but the pen not so much. Paul
Answer to "Note 8 Stylus is too sensitive"The issue is moisture. I had the same problem, the pen got wet while I was taking a photo in a pool. The phone was fine the pen though got some moisture in it and started doing exactly as you describe. I took the pen tip out and left the pen in a hot area (110f) for about 3 hours so the moisture evaporated, put the tip back in and problem solved. Unfortunately Samsung sell waterproof phones with non.waterproof accessories! Thankfully it's a quick and easy fix!