Here's the Rub
Depends on your POV. Some would have the "auto" revert to "manual", some would have it revert to more "auto". If on the one hand, auto can be overridden and hand flown, the hand fly folks would say, why the auto in the first place? I have two recent incidents to fall back on.
BA038. Engines were running, but refused commanded thrust.
1549. Engines were running, but idling. Both are odd results given a qualified crew on deck. Suspicion falls on FADEC.
If engines are spooling and burning fuel, why aren't they increasing when "commanded". The 64 $ question, perhaps. Time will tell.