The Portal UI for APPGW resources should display Stopped if stopped and not "Degraded State"
when attempting to diagnose some connectivity issues through our APPGW I didn't look back through the Activity logs far enough to see that someone had actually stopped it explicitly.
when checking health and backend probe status the only UI Clue I received that anything was amiss was a notice that the Gateway was in a Degraded State.
this to me implies an issue/ something broken etc. It would have been much more useful if this simply said "Gateway is STOPPED since <date>"