I am migrating from Insteon hub to ISY and came across this bug. It was one of the first things I noticed because we have dimmers in our bedrooms and the family hates the bright led. So I decreased the levels. I can see the backlight values in Insteon's mobile app. In the app they refer to it as LED Brightness and it is shown as a percentage. But migrating to ISY means I can no longer use Insteon's mobile app. I am using ISY firmware version v.5.2.0. UI is the same version too.