Thank you! You have solved the mystery. We will put in a fix for this.
glad you guys are going to fix this!!!!!!!! its hard to do pvp when going into my bo lay out then need to adjust throttle into reverse but the throttle is doing its own crap because it seems the cuser is on it but yet its not. i had my mouse cuser in the mid of my screen moving the throttle up and down.
If this bug strikes and you can't control your throttle, clicking into the throttle bar again clears it up. The mouse and throttle will return to correct behavior (or course, you must click so that the release event is still inside the throttle bar)