Mission Starts in AUTO without throttle input


I was flying without problems in Auto mode, with the throttle check to start the mission and everything was going as expected: Manual Mode – ARM – AUTO – THROTTLE INPUT – TAKE OFF

Suddenly it has started to take off just after going into Auto mode, without the need of throttle input and I can’t find the reason for this behavior.
Here you can see the change to Auto (Channel 5) and the takeoff without THR input (Channel 3):

I also add the flight log:
Auto.bin (984 KB)

Any idea of this behavior?
Thanks in advance!

Someone has the same behavior or any idea why this happens?