Owners/service Manual problems of the 2018 BMW 530

While driving at 40mph on a normal paved city street straightly, driver side door suddenly ejected and opened to the "half-lock half-open" state (door was fully locked when beginning to drive, and no warming was displayed). At the incident, door did not "fly open" but the lock was suddenly disabled, and door opened itself. Audio warming and visual warming on display were both activated at the time of the door opening. I immediately proceeded to a stop at the nearest possible area, and manually closed the driver side door.