The on/off status is not updated correctly on the widgets.The light can be turned on inside the app but the widget can still say off.
And from a UI perspective the on/off button inside the application is not very responsive. It is only "highlighted" once the light is on/off. Is should give you instant feedback when the button is pressed. Becuase if it like sometimes take 1-2 seconds for the light to answer, It feels like nothing have happened during those seconds.