Diễn đàn hỗ trợ Firefox dành cho Android

I have a vivo pad 3, and when I'm using it in landscape mode, the firefox app would only occupy part of the screen, leaving the two sides empty. It used to work fine and I don't know what made it to behave like this since I didn't touch the settings, and no other app is like this.

After some update on Android Firefox, discarding tab by swiping to right (on List mode) has become so much more difficult that it messes with the flow and makes me consider switching browser. Is there a way to maybe tweak some configs to change it back or even a way to downgrade the Firefox?

Hi, I am using Firefox Nightly. It keeps prompting me to lock my private tabs, I accidentally clicked it and now I need password/biometrics everytime to view my private tabs. How do I disable the lock? I cannot find it in settings/private browsing.