So the red light detection thing definitely works on yellows that change red after you are in the intersection. I was nearly through when it switched to red and the car threw up the red hands. Shortly thereafter, there was a lawn maintenance truck partially in my lane and no traffic in the oncoming direction so I took over steering and moved across the double yellow lines and the car put up a "lane departure" warning and attempted to steer me back into the lawn truck. I fought it off but its a stupid feature if it can't avoid steering into objects (that it did not detect from a distance). I was going 35mph in a 35.
Tesla needs to develop some contextual understanding or even better still vision. Not just to avoid steering into objects it somehow still cannot see (its a big truck with other equipment on it) but to better harness the vision package they have (warts and all). Otherwise its been a good update for me from 2019.12.1.1. The visualizer works well, it seems to detect pedestrians better and they are much more visible on the IC. TeslaVision just seems to work slightly better (it better tracks vehicles from a slightly farther distance, the vehicles are better animated, and it will take well marked protected left turns if there is a lead vehicle (It used to chicken out in some versions halfway through the turn or not turn the wheel enough and careen into other lanes)). So steady improvement and not much backsliding so far. They really need to deploy much better driving policy than they have managed so far and the active safety features need that added contextual awarenesses.