In step 3, listening to the mercenaries talk and interjecting comments to cause doubt, I am able to get them to leave. The dialogue at the end does not match the dialog it did before the latest patch, and the runic seal does not activate. You can complete the rest of the quest and get the reward from the quest npc, but there is no completion for the Blight ach. I have done this 7 times now, the last 5 with the runic seal problem.
Just to further clarify, the first 3 times I ran the quest it ran normally. It was on the 4th run where it's supposed to give you the Blight achievement that the mercenary portion doesn't work. I used the same dialog and it worked before. I've run it 9 times now.
