Suddenly, none of my scripts are responding to any inputs at all. Not keyboard, not mouse. I made a slight tweak in one script, but then changed it back. Nothing. And not all of the scripts that stopped working had been changed. I don't see anything obviously wrong, across multiple scenes. I used Debug.Log to make sure the code was executing in Update(). It is, but it's not getting any detection of input. I tried restarting Unity. Nothing. I don't know what happened.