They are all buggy. Mine does not beep after the door is open, but rather the start / +1 minute button will start the microwave with one minute, or add one minu

They are all buggy. Mine does not beep after the door is open, but rather the start / +1 minute button will start the microwave with one minute, or add one minute if the microwave is "cleared" or running. If it hits zero seconds, then you press the button it does nothing until you hit clear.