I was approaching the final approach on LOWI to land on 26 to 9500f with flaps 3, armed spoilers and landing gear down, before the final turn, on an a321. Suddenly the nose began to rise and fall, with the stall very close. I removed the autopilot to try something, but I couldn’t save the plane.
Why did this happen? It is the first time that happens to me. Is it a plane bug or I did some wrong?