add setting „always show vertical sidebar in fullscreen"

[ske]

I am used to use the vertical sidebar on the left side as well as using my macOS-Dock on the left side. So when using Firefox in fullscreen it is de facto unpossible to use Firefox with more than one tab.

An from my point of view easy solution would be to add a setting „always show vertical sidebar in fullscreen". Thanks for considering this idea.

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.