Not sure if this has been reported before, I’ve noticed it for a while but wasn’t sure if it was a bug or not, but some voice lines (the main ones I’ve noticed are the dialogues for “wasted” healing draughts and Sienna’s high heat voice lines) only play when the host triggers them.
For example, if my friend is hosting a game, the wasted healing dialogue will only trigger if he’s the one who wastes the healing draught, or the overcharge lines only play if he’s playing Sienna.