In my most recent game, an enemy came to talk to me, and the screen looked like this: https://drive.google.com/file/d/1nGu4nzfiH7fcdaUU1eg3aK2jDY-5aGSK/view?usp=sharing

My custom race used the new repulsive trait.

I think I was talking to the Silicoids, by the picture, but in the top left of the screen it says the Psilons are talking to me, and in the bottom left, it says the Darlocks are talking to me. This game didn't have any Darlocks in it, but it did have, and I did have contact with, both the Psilons and the Silicoids.

My mod list is extensive, and includes my personal preferences mod. I think the only mods that affect Diplomacy are UCP and 5x, except for the globals in my personal preference mod which includes:
I can't imagine this code affects the diplomacy screen in this way, but nothing else I'm doing is going to create this problem.
If you know of something that could cause this, please speak up, but in my mind this is a bug report and doesn't require any direct response really.