Address doesn't autofill or appear in Top Sites after removing from history
I clicked on a video in YouTube that I didn't want to have in my history. After navigating to the History sidebar, I right clicked it and clicked on "Forget About This Site". This was a mistake, apparently I needed to click on "Delete Page" instead, now my long rich history with YouTube is gone, but that's beside the point.
Now even after accessing the site numerous times, the address bar refuses to autofill after I press a 'y', and it doesn't come up on the Top Sites in the homepage, like it was blacklisted somehow. The autofill works with other sites. I have no other website starting with 'y' which makes it search for 'y' in the search engine when I press enter. 'browser.urlbar.autoFill' is set to 'true'.