This is great info I’m having the same ghost focusing problem with my NX but it has to do with the communicaon system we are using (cheap) and the length of time that the camera is on. Once I restart the camera the cycle seems to start all over again but the length of time it takes for the problem to come back seems to vary greatly. Still running tests to see if I can nail down what is triggering it but I would love a fix from Sony.
Matt Westerman