I think Air France got caught out at TLV a couple of times with the similar Airbus “Open Descent” mode as well.
A good rule is to follow the flight director. If you choose not to follow it, turn both of them off.
Another good rule is to read and understand the FMAs, left to right
Boeing: Autothrottle///Ailerons///Elevators
—————————-——AP status———————
Airbus: Autothrust///Elevators///Ailerons///AP status
And another one is to ask yourself, “What is actually controlling my speed?” Auto-Thrust/Throttle or Elevators? If it is the elevators, what is the Autothrottle/thrust actually doing? Will it “wake up” or is it dormant? Should I use a different vertical mode? Should I manually control the Thrust Levers?