I don't know if you would call this a bug, but it might be something to take a peek at. If Breden was your second in command, and then you kill her late in the game...and if you healed Elery from the poisoning, you get this:
Her voice is feeble, but she manages to rasp, "No, hiera." Grief and fury is stark in her eyes. "Breden was just killed, and you...?" She doubles over again, retching. "Damn you all."
I choose Elery.
I choose de Firiac.
Anyways, the bug is that the choice for Choose Elery stays up there...you might wish to blank it out, or remove it after she said her piece.
Also, definitely have a bug:
If Breden is second in command...and after the poisoning, you can choose to have her bound up/put in another cave.
What is bad is just a couple seconds later, Breden says "Get some sleep MC"