After the B737 Max nose dived due to pitch controllability issues, Airbus has identified similar high pitch issues with the A320 and A321 NEO aircrafts.
A combination of scenario where the aircraft is loaded in a tail heavy , speed is reducing and side stick pulled full back with TOGA thrust, excessive pitch attitude could occur.
As Airbus studies more scenarios we expect more issues highlighted and remedies. There are active risks and latent risks. If we tinker with a system there is a high possibility that the latent risks come to fore. Therefore it’s imperative to carry out a change management risk analysis.