I think I might know what caused this BUT it doesn't make it not an issue. Right back in Act 1 if you attack the Githyanki group before you know Voss I am guessing it sets him as an enemy even though he flies off on his dragon. Later in Act 3 when he comes to make peace with you and recruit you to help him - if you agree then it should set him as a friend BUT I don't think it is. Even though he has come to talk to you and the cutscene has him make an agreement with you, the ingame Voss is presumably still set to Enemy. Please fix this, because it doesnt make any sense.