Door open chime and indicator

I just received my Highlander 7 years before and currently found back side opens lift gate window. Even, in case not closed dash light points out a door is open and ring sounds. Outer window release button was unintentionally pushed & window not closed again.

 

I know dash light points out when door is open is simple indicator and it is obvious when door will open we will hear a sound. But why my vehicle not closed again?