no there no feature of this there must be an extention you have put on but you could try looking in the settings it must be a problem on your computer try reinstalling it
I found something...
into ur adress line:
about:config
search for:
accessibility.blockautorefresh
maybee that's it? if not, try searching around the about:config,
my friend had a similar problem, and although im sure you dont have it, it happened to be a virus :/it's not saving my cookies.