I have this problem with Olgierd in HoS expansion as well as a random Gwent card player at the camp when recruiting Evelline for the Auction House break-in. I ended up getting frustrated and pushing through with the quest, and don't know whether I'll be able to play Olgierd again. This happened with both 1.10 and 1.11. Please advise to possible solutions.
I verified/repaired but I don't know if it fixed the issue for me in the game I had, since I had progressed past the point where I was able to play him in Gwent. However, it did not happen in the New Game + that I started shortly thereafter and got to the same point.