If I open a new tab and type a url in or select a bookmarked page, or the quick navigation options for recently or frequently visited pages that shows up on opening a new tab, none will never load. The only way i can have multiple tabs work is to google the page i want, right click the link and open in new tab and google the next page i want to view. So for example to listen to some music on youtube and scroll through facebook, i would have to open firefox, search for youtube, open it in a new tab, perform a second search for facebook and open it in a new tab for them to load. The entire time i have been typing this i have been trying to load something from a bookmark and nothing has loaded yet. Using windows 10, firefox says version 56.0b9