Kind of minor
I find when I party with Doram and Human, Humans can't see Doram names in the party window, and Dorams can't see Human names. Priest was having a hard time buffing because the Doram name did not show.
In my case, I figured out it was because Human on Doram account was already in the same party, so it caused this bug. Don't know if this is really a bug or fixable, but something I noticed.
So, the "character from same account is already in this party" error message did not show when I added the Doram, even though another Human from the same account was already in the same party
The other human character was kicked, the Doram readded, and now all names can be seen in both Party Windows
I hope that makes sense.