Multicopter thrusts upward violently when flight mode is switched from stabilized to position

The multicopter is able to fly steadily in stabilized mode. However, when we switch to position mode, the multicopter suddenly climbs upward with full throttle even though the roll/pitch and throttle sticks are centered. What could be the root cause for this issue? I have attached the log files for your reference, thanks!

I think you should look into MPC_THR_HOVER parameter.
Canโ€™t see it in your parameter list, but I know I was experiencing something similar until I messed around with it.