I can't say for sure if this happens in 1.04, but it did happen in 1.05beta,
1) I talked to Kaerna in the bar, and got the quest to return her ring to Purnisc.
2) I then went to Purnisc, but knowing what's upstairs from a previous playthrough, I never brought the ring up.
3) Talked about svef, asked to trade, and when exiting the conversation, I had a quest update as if I gave the ring to Pursnic.
1) No quest update should happen, or if there's an update, the update shouldn't say that I gave Pursnic his ring, but rather something to the effect of "I didn't bring the topic of the ring to Pursnic, I think I'll hold onto it for now."