Possible motor desync? Strange behaviour

I had a problem with one of my drones, it has flown well for years but yesterday suddenly started to wobble in the second battery. I could make it land with very low damages, but altought I think that there was a problem with motor 2, I have tested it on the table and it is ok, all the motors and ESC seem ok…

So please could you have a look to the log?

My quadcopter setup is:
Motor: T-Motor u7 420kv
ESC: Hobbywing x-rotor 80A
Props: 15x5.5
Battery: 6S 16000mAh
FC: The Cube Pixhawk 2.1

Thank you!

If it was a desync you should update to at least 3.6.12