I'm trying to smooth a demo and I'm finding that the drive function is just simply useless. You can move the camera, but the very instant you click again it resets it's position back to where it started.
It's impossible to disable drive after moving or click anything on the screen [EG setting a keyframe].

EDIT: Seems every single time I ask a question I always immediately find the answer. Alt tab out and back into the game. Works fine.