Ranked Decay Warning

"LIKE A SNOOZE BUTTON Players in danger of ranked decay will receive an inactivity warning notification just once ⇒ every time they log in until becoming active again" This was in the patch notes for the current 5.10 patch, and does not seem to be working as I was just suddenly demoted from decay with no warning at all. Even the 'Leagues' tab never said I was inactive when I checked to see if I was decaying soon until AFTER I was demoted without warning.