Last three flights I noticed the altimeter reading, wrong.
I rised 120 meters of height and when the Mavic was back to the home point, hovering at 3 meters of height, the reading was 36, 48 or 65 metres.

Anyone noticed this?

No ... a difference of a few metres can be normal but not 30+ metres.
First thing to do is recalibrate the IMU.
If that doesn't fix things, the drone should be sent in for repair.

I have a problem with my mavic 2 enterprise dual, smart control. When taking off it reports height normally, but during use it loses real height references, I can't trust the real height of the flight. New drone, since when we bought it, it gets to give differences of up to 15m from the real height, and this is dangerous because I need the reference of the real height to work.