I feel so stupid!!!!!!!!!!!!!!!!!!!!! This is NOT a bug. This is USER ERROR! If you want to read the details I'll list them, but the bottom line is check your joystick and other controllers for proper calibration!
So a month ago when they opened up all the DLC for free for the 10th anniversary (I already had bought them), I also got some mission to fly an airplane and I think do some temp measurements around Kerbin. After having difficulty (probably bad design, I don't have a lot of airplane tech) getting into flight using mouse and keyboard, I found a USB Joystick Attack 3 and boom wonder of wonders, I could fly pretty well with it. It kept rolling it but I trimmed the issue out of existence for flying that particular plane.
The problem is, I never calibrated the joystick. So from then on, every rocket I had made, and every ship in orbit, and every satellite from then on had a constant roll. I tried to trim the issue thinking it was problem with the patch, it was NOT, it was the joystick. When I launched a new satellite... on the launching pad SAS was suddenly in constant circular arrow icon rather than stable SAS icon, I began to realize I've got something giving input when I haven't touched a key on the launch pad! Calibrated my joystick and the game is now back to the SAS you expect. Point in a direction and it will stabilize using whatever reaction wheels and pilots or probes on board.
Sorry I raised the alarm but the bizarre coincidence led me to, and now I'll just unplug the joystick until I have another plane mission again.