In missions like "Not On My Watch" and "New Threads", if for some reason you either reloaded checkpoint or quit the game and play back while the missions are on, the objects that get destroyed like the dock "Not On My Watch" collides with a duplicated dock that is not destroyed and sometimes it cause the mission to be impossible to advance. I'm not sure if it still happens cause i haven't had the chance to play now, but these videos are from 6 months ago