Hi all. New owner of a 2017 Trax. Have an issue I was wondering about. Brakes stop the car fine, brake pedal is at the top (like it should be) but when sitting at the stop, the brake pedal bleeds down, almost to the floor. Not loosing any fluid. Thought it might be the master cylinder. Took it in for service, they bled the brakes, but they did not fix it. Does this issue with the brakes happen to anyone else? Thanks for any help.