I actually kinda dig it, now that I’ve gotten it to work, as I described in another topic:
I don’t know if it’s “normal”, but I think I might understand what you mean. When I left the frame but still had Smart Focus enabled on my Cam v4, it seemed to remain zoomed into the last place where I was walking. I don’t know if this is another glitch with this feature (it is labeled “BETA”, after all) or if it remained focused in that area because of ongoing movement (it’s looking out through a window, and it’s windy here, so tree limbs move around quite a bit), but I agree that just turning it off seems to be the reasonable thing to do.
It’d be good to know if this is actually the expected behavior or if Smart Focus is supposed to “time out” at some point and reset back to the un-zoomed view once motion in the zoomed portion has subsided, which I think would be a reasonable thing to want.