When my car is on the side of the road and I leave my lights on, the traffic refuses to go around my car. There could be literally a couple inches for them to turn but they refuse to do so. If I open the interaction menu, go to vehicle, and turn off my lights from there, the traffic starts to turn around my car. At traffic stops it's annoying to see a line of drivers beeping and cursing when all they have to do is turn slightly to get around my car.
Equally as annoying, if I call traffic stop assistance with smart radio, any cars and the peds driving within about a 35-40 foot area disappear. It doesn't happen when I press the button, it happens as soon as the backup car spawns, when the blue blip appears. It happens every time, and regardless if I'm looking at the cars or not.
Edit: I just noticed that it's Ultimate Backup that's causing the traffic to disappear. When the backup spawns, traffic disappears around me, then any cars that are nearby the police officer begin the despawn too.