I need help! My quadrocopter jumps on 20 meters. I configured HOVER! I do not know the solution

[Smolman (Sergey S)]

How could I be so inattentive?
This discussion of the problem:
http://discuss.ardupilot.org/t/surge-in-altitude-upon-1st-entering-althold-or-poshold/14200

CAUSE BUZZER!!!
I disabled the buzzer, and stopped jumping