I noticed that since last update, some keys wouldn't work, i.e. for the drive handle, pressing "-" would lower it but pressing "+" wouldn't work, even though the key bindings are correct. The same thing happened with the brake handle: pressing KP 3 would apply brakes, but pressing KP 9 would do nothing. Today I realized that the problem goes away if I disconnect my USB XBOX-style controller. Apparently the presence of the controller, even if not touched, conflicts with the keyboard.