Quest: The Imprisoned Elf
Issue: Stingtail says "Don't mention my name to Griff *Ahem* Please." after I betrayed him and killed Silence to stop Stingtail from dying. He even thanked me for saving him. Talking to him after that event triggers the faulty dialogue, as I have obviously mentioned is name to Griff as he should be well aware.
Expected result: Stingtail would thank me for saving him, but dislike and distrust me for betraying him. Maybe a reasoning check in the final dialogue to convince him you had no other choice, leading to either positive or negative relationship with him.