Too much oil according to the oil measuring rod

Hello, I’ve had a new Citroen Grand C4 Spacetourer, in the petrol version, manual manual transmission and 131 hp for a little over 1 month. I checked the oil level a while ago by means of an oil measuring rod (the onboard computer reports oil level ok) and had too much oil in it, that is, it was enough for the maximum marking. I was then also in the workshop, where one was mainly surprised, but left the car a little bit, so that the oil would flow back (vo Then again was measured with the oil measuring rod and actually there was too much displayed. Then the oil was changed and also the oil filter replaced. (without cost, as still in guarantee) Now about 300 km later I look again and the same problem, car reports everything ok with oil level, however the oil measuring rod speaks a different language. Does anyone else have this problem with their vehicle?