Hi, I'm a new member and signed up today. In my new member introduction I included some info about my experiences with my 2019 Legacy Limited and erratic remote start behavior with the regular key fob. I went back and re-read the reverse side of the quick start guide I received when I had the factory remote installed a couple weeks ago. It says to unlock the car with the unlock button the fob before entering. Have yet to try it but have had various results as you have had without doing that first and has been a mystery. I'm thinking this will stop the alarm trigger problem and the engine will shut off when I open the door as I normally would with the handle as the user guide says. We'll see....and will report back after several test remote starts.