This happens with regular adaptive cruise control on my Ford, when the cruise control set point is a lot higher than the current speed: the car accelerates after another car clears the lane and ram into things.
The industry has many highly effective AEB systems, and has for years now. I cannot comment on Ford's because I don't know specifically about its problems.
I imagine the Ford would brake too if it detected an obsticle (and has an AEB system of some sort).
On turns, it doesn't accelerate, only maintains speed; can be frustrating if you want to act like a racecar driver. For example, following someone around a freeway curve at 45mph, and the other driver changes out of your lane. Despite having adaptive cruise set to 60mph (or higher), it will stay at 45mph until after the curve, and only accelerate after ~5 seconds of straight roadway.
It does sound the collision alert (sadly no autonomous braking here) very consistently when I'm accelerating or adaptive cruise is on, and there's a stationary object ahead.
My 2015 S70D does something like this too.