Firefox cannot load all websites in e10s window. But Firefox can load all websites in e10s window. It shows mostly, Tab crashed Well, this is embarrassing. Well, this is embarrassing. We tried to display this Web page, but it's not responding. Tell Mozilla about this crash so they can fix it. Or sometimes for the last tab it shows : Websites show a spinning wheel and never finish loading Of course other browsers works 'perfectly' onto loading sites. What can I do. Is this an e10s bug, that I could help to qualify and how? Also looking for a workaroud. I want to restore my tabs onto a non-e10s window, but really don't figure how to do that. Means, after relaunching FF-nightly, restore my windows and tabs. He still give me this message : Nightly is having trouble recovering your windows and tabs. blah blah... I want to disable e10s as of for now, until he will maybe work again.