Don't expect that to last, such settings are traditionally temporary. Mozilla normally removes them a relatively short time after the big new feature is released and any related bugs have had time to get sorted out.

I personally like the Nova design, BUT I know lots of people hate it and prefer the old one, so it really sucks that it's buried in about:config. I feel like boxy vs rounded should be a toggle, you know! If they eventually drop the about:config, maybe LibreWolf or other forks will continue to have the option for the old design (?)

Librewolf has an option to disable Nova with a checkbox. It's one of the first things I did after I got the update. :D

Why are you going into about:config when you can just go to Settings > Extensions and Themes. And choose a different theme?

There are plenty to chose from and you can even install a custom one or make your own.

they dont want you to stub your toes against the corners.

Me too. Call me shallow, but it's one thing I miss from Gnome. I occasionally think about changing my KDE theme to have more round corners.

Firefox had rounded corners everywhere, now everything is pill shaped. There are no corners anymore

What about it don't you like? I didn't read the whole thing but the idea sounds great, I've been missing something like this

librewolf

It came with the last update. There's an option to disable it in the settings.

I'm pretty sure librewolf doesn't touch stuff like that.

But idk — my setup has so much custom css that the only rounded corners I notice are at the bottom of the urlbar autocomplete dropdown, where they don't bother me. My tabs are still nice and square and below the url.

Use a user style css thing to disable it

it's gonna come to most forks eventually but the advantage of desktop firefox is that you can fix it with userchrome unlike any other browsers