It is very difficult to fix that problem. They have to patch that bug, but you have to go back to a saved game and start from there again. I hope they come up with another solution, but I don't think so. It's a shame to lose so many hours of gameplay due to a bug, but that's what we have for now. Good luck to everyone.

Well, I no longer get the green icon of the needle mission. I still can't kill him, but the green mission icon has disappeared on the map. I still can't kill him and I can't advance in the game.

Good. I have been bugged the mission "a needle in a haystack".
I was bugged right at the end, when you have to kill the needle in the market.
He won't let me kill him, I pierce him with my sword and the uncle remains there, impassive.
Do you have any solution?