[Bug] Show stopper bug, Keeper Hawen, From the Beyond

There appears to be a show stopper bug in a quest "From The Beyond". After completing the quest objective you need to talk to Keeper Hawen. However, if the Keeper wanders off from the conversation before you have time to click the conversation option that completes the quest. That option won't appear anymore when you talk again with the keeper. Resulting the entire "Dalish Favour" or what ever quest line being in a dead lock situation. Now I would need to reload and replay 6 hours of gameplay just to have an other chance with the quest. For the Maker's sake add more auto save slots !!!  Also, It's very idiodic that NPCs keeps wandering off from a conversations, and it happens all the time.