Brake Hoses, Lines/piping, And Fittings problems of the 2017 Mazda CX-5

When stopping my vehicle, my brake pedal tends to 'bleed' downward, to the point where it is below the level of the gas pedal. The result is I sometimes wind up hitting both the accelerator pedal and brake pedals at once. I've never had another car where this can happen. This is dangerous and terrifying when braking in close proximity to another vehicle. I took the vehicle to the dealer for an inspection and adjustment, the resulting slight improvement only lasted about a week, now it's happening again. In the absence of air or other contaminants in the brake line, nor detection of faulty components, I now consider this to be a possible design flaw.