Trouble on a mission

Hello, I wanted to ask if someone faced such a problem, recently I decided to replay the game by 100%, but something went wrong on the mission (liberation of the sage), an additional task that told about the fact that you need to attack the sage from above in a simple way does not perceive my actions, gives a notification that this additional task is present, but after the condition is met, it simply does not activate and the mission is completed by 90%, today I spent a whole hour replaying this task, but the results were not all right well, even deleted his career and started a new one, to no avail, catching this wise man and jumping from rooftops and fences, on a straight line, he probably already has goosebumps when he sees Edward, since I even found a way to make him himself from the roof jumped off and stopped, in general, tried everything, absolutely,how do they imagine this jump, I don’t have enough imagination to think, maybe I’m really doing something wrong, please tell me who had a similar problem