Thanks for the report, I'm not sure if we've tested any directinput controllers recently but I remember we tried a couple when we recently changed our input API and it was working back then. We will test it out again soon and see if there's a bug with them. Can you be more specific with what controller it was?
The game should be automatically detecting if Keyboard/Mouse was your last input and switch to it, but maybe the controller was interfering with that. If the game is restarted with the controller disconnected Keyboard/Mouse should be fine.