Strange position drift in loiter

Hi all!

I have a strange problem with my quad (4.0.3) 200mm 5 "Matek F405 CTR GPS radiolinkTS100, wifi telemetry. Occasionally it happens that it loses its position in loiter and drift always in the same direction. In this case it is sufficient to land disarm, arm and fly again and the problem disappears

In the attached log you can see the first flight where the problem occurs and the next flight where the problem does not exist. In the second fly, i use loiter, poshold, auto, circle and all mode fly well.
Also even if I’m flying 2 meters the telemetry also marks -4 meters … but this seems to be a problem of the Matek F405 CTR not resolved :frowning: