Turn signal switch, leaving on

At night before leaving my car, I usually turn off my headlights, but sometimes I forget to do two clicks down to turn off everything. Sometimes I do one click when ends up in turning the turn signal on only. I notice it never turns off, even I key fob locked the car twice which usually turns off the headlights. This does not turn off the turn signal (city lights) off. I have to go back into the car and do one more click down. Is this normal or is it just my car?