randomly some action menus such entering vehicles, use first aid, use repair action and etc disappears and never show up again even if I exit game and restart it from last save, so I have to completely restart that mission from beginning and whole of my saved progress will gone!
I don't know how it can reproduce but surely happens sometimes, but from what I remember, when I try to heal one of my team members and heal action won't be successful, this issue show up but not always!