That does sound odd! It should give you the full page look as soon as you hit that button. Mine jumps from this narrow look to the wider one in an instant:It has narrowed about 35% without me doing anything! Thanks for the tip. I changed width as you suggested but it has only moved a fraction. Still, I am 50% better off than I was yesterday.
Perhaps something else is at play, but I have no idea why it's not working properly in your case.