“why are they so obsessed with the window staying down?”
.
Florida law limits the dark tint that a car window can have.
With a tinted window down, LEOs can be aware of any danger of a weapon.
You can tell from the footage they can see through the window. And if they walk away up or down won’t change their ability to see a weapon. It’s Miami it’s hot. I’m in Tucson I’ve rolled the window up when a cop walked to the computer to make the ticket, AC is our friend.