Can you clarify what you mean by “light bar”? Are you referring to the LED strip on the switch?
If so, when you press 2x on the config button, you are saying that the LED strip on the switch returns to its default color and brightness. So it sounds like what is going away is a notification. If that is the case, a 2x press of the config will cancel a notification, at least on the Blues and Reds. That is the expected behavior. Could that be what is happening?