...in Cyrodil, when you are fighting NPCs (eg at a resource), as SOON as they all die, you immediately go out of combat.
Stuck in combat means your Death Dealers Fete will always be stacked!
this is still a feature, have to crash the game to exit when in cyrodil AFTER running (hidden) across the lower half of the map to the wayshrine by the gate.
really tired of this feature, it's only been ten years, right?