I logged it in good faith since it goes against my piston engine fixed-wing leaning knowledge and experience of flying at high altitudes. However, I saw on other forums with real helicopter pilots that some type of helicopter is not to be leaned.
Let MS/Asobo consult with Guimbal to give us the most educated answer.
For now, until we get an answer or fix, a workaround is to lean the G2 like a C172.