Yes, i also faced this problem, what i did was if file size was > 100kb then i delete cookies and bot will check if cookies are not present then it will call login function and new cookies file will be saved which will be less than 100 kb.
Seems to be a bug, if you have tunneling enabled it leaks your ip and if you disable tunneling you can't continue to click to next page on some urls, seems to be a bug.
