So yeah, every time a new line is added, the end letters of the previous line take on the color of the last person who said anything. The more you talk, the more letters are doing this... and eventually it starts wrapping around and changing the other persons name. Doesn't cause a crash or anything, just a weird display bug.

This started with a single letter changing color, and eventually had something like fifteen letters changing color at the end of our game. Issue persisted after loading a save.