I have a lot of Firefox windows and tabs open, and I really don't want to lose my session. I wanted to open a webpage in Firefox in fullscreen mode. But evidently there's some kind of serious flaw in Firefox that makes it incapable of opening webpages in fullscreen mode. Everyone says the only workaround is to open the webpage in kiosk mode. So I tried it. But now I have two big problems: 1. One of my Firefox windows, with all its tabs, is stuck in kiosk mode. (Even if I close the window and then restore it with Ctrl+Shift+T, it's still in kiosk mode.) 2. All new Firefox windows I open with Ctrl+N are also stuck in kiosk mode. I don't know what to do, and I'd really appreciate any help. Thanks!