CVT, stability control and slick roads

After driving my Subie for 3 winters, I can say that the CVT transmission is good, but up to a point. Sometimes, when the roads are super slick, and that there are too many "moving parts" involved to watch what's going on, something takes place between the CVT, the stability control and the all-wheel-drive that can confuse the vehicle out of control.

I don't know what exactly happens and why, but what I've learned is that when roads are covered with “bad snow”, it's time to switch from auto to manual in order to remain in control of the car. Then, and only-then, the car will behave as told!