I am using Windows 10 with the current version of Firefox. I currently have 34 websites bookmarked but I cannot add any more. When I delete a bookmark, it doesn't work; it will delete the bookmark from the toolbar, but the browser will autofill the bookmark's url as I am typing it in. So, the bookmarked (which I just deleted from the bookmark toobar) url is still saved somewhere and the star icon on the browser that signifies a website as a bookmark is off when I am on the site. Even after deleting a bookmark, I still cannot add a new bookmark.