Level not displaying properly in groups

today i had a friend join my game, i commented on him reaching level 30 as he was low level last i saw.
he replied saying no, but asked if i started a new character. i also said no.
what we found is that our levels were cloned to the others in the group.
i saw myself and him as lvl 30 due to me being level 30
he saw himself and me as lvl 8 due to him being level 8

issue continues after reset of game and pc

i am the only lvl 30 in my group