Hi Umberto, i have this problem on ORBX LYBE, latest version 1.03 ( same probelm in before versions)
So, pictures say more than 1000 words.
Actually, when passehgers boarded in bus and bus door closed bus then jump to exact elevation of apron.
This happend also with de-ice trucks on same apron, cargo and catering vehicles not have thois problem.
Any tips?
Merry Christmas