Rated 4 out of 5 stars

It works!
Thank you for fixing it. This is great for full-fullscreen viewing.

Could you possibly add a feature to make Firefox pseudo-fullscreen. What I mean by this is for Firefox to act like it is in fullscreen mode, but is actually windowed. This would help save space on the desktop.

Plus on linux, it would be possible to hide even the titlebar and the taskbar.

I don't really like that I can't switch between apps and keep Firefox nice and clean.