When I initiate WKExtendedRuntimeSession with a background mode of "Underwater Depth" I get an orange indicator showing the Action button on the screen that stays showing all the time and then animates when you press the action button. I believe this started with a recent WatchOS update, because it never happened before.
Does anyone know how to hide it? Or keep it and be able to detect the Action button presses within my app (if possible)?