Bug in missions Chosen of the Gods and Sesame open (The Witcher 3: Wild Hunt)

I'm wondering which mod is causing the bug (like many) in the final of the mission or not a mod at all, where after the scene of defeating Him it is impossible to save and fight, the music of the battle is playing. The same bug exists in the "Open Sesame" mission, where before the start of the video with the negotiations and the hostages, there is also a fight. After the whole scene, it is also impossible to either survive or fight normally, although here you can somehow limp to a dialogue with the Borsodi brothers and you can fight. I know solutions to the problem with the help of bombs to kill all opponents at once and the script worked. I'm wondering what exactly is causing this bug. Do you know?