The redesign of Settings is now enabled by default in Nightly!

[gharp]

Over time, Settings had become harder to navigate, with some controls difficult to find and related options spread across crowded pages. This redesign reorganizes Settings into clearer groups and pages, updates labels and descriptions, and introduces a more modern and consistent experience throughout.

Importantly, your existing preferences remain unchanged. Some settings may appear in new locations, and search remains the fastest way to jump directly to what you need.

Your feedback in an earlier discussion about redesigning Firefox Settings helped shape the direction of this work. We’ll continue refining the experience as it moves toward Firefox 152, and we’d love more feedback as you try it out in Nightly.

[victoriagarcia]

I tried the redesigned Settings page in Nightly earlier today and honestly it already feels less overwhelming than before. The old layout had reached a point where some options felt buried unless you knew exactly what to search for.

I especially like the clearer grouping so far, although I think long-time Firefox users might need a little adjustment period while muscle memory catches up. Curious to see how it evolves before the stable release.

[denyshon]

The "Tabs and browsing" and "Downloads" sections being at the bottom make no sense. The first one contains probably the most useful and most used settings Firefox has, yet the sections are under, e.g., "Appearance" with a single setting.

Also, the section list is now too long and requires scrolling... which is not good. Even though the sections at the very bottom are not frequently accessed, just seeing a scrollbar there doesn't feel like good UX.

[Propheticus]

I like that all the language-related options are grouped together. Most of the new grouping makes sense to me and causes less settings pages have to be scrolled to find the setting you need.

• Regression: Advanced Settings like "proxy settings" and "https-only" cannot be searched for via "Find in Settings" any more.
• Bug: When using a custom DoH provider, the entered provider URL is successfully used but upon restart of Firefox the provider drop-down shows the default (cloudflare) is selected, which is false. Actually, the custom provider URL is still being used as can be confirmed by looking at about:networking#dns
• Arbitrary/debatable: Some grouping is still a bit odd. Fonts feels like they belong in Appearance ...but there's at least a link there. 
  Browser layout I'd expect in Appearance as well. (which leaves Tabs and Browsing for the behavioural settings)
  Permissions and data feels like it should be close by (or in) privacy and security.
  Firefox support is a separate menu item but also shows up in About Firefox.
• Small nag: The 'customise sidebar' icon looks like the settings favicon. Too often I've wanted to open settings only to have to close the sidebar options again and move to the other corner of the screen to open settings from the waffle-menu. Would be nice to have an actual settings shortcut on the sidebar.

[grundt]

I experienced a different DoH bug.
I have DNS over HTTPS disabled. 

The new settings UI showed this:Dns over Https (DoH)

Dns over Https (advanced settings)

The text says "Default Protection", but if you navigate to "Advanced Settings", it does display the setting (off ) correctly in the purple banner, but has the wrong radio button selected

[Propheticus]

Could the off state not be because you're in a region where the Mozilla-flavoured Cloudflare DoH is not available? So it's not explicitly off, but auto off due to your specific variables. 

[grundt]

No that's not it, I explicitly had (and always have had) it turned off.
(because for me it's redundant ... I have the cloudflare app installed, which does this machine-wide, not just in my browser)

FWIW, I subsequently selected the "Off " radio button, and this is the result (which persists after restarting the browser as well):

DNS over Https (off)

DNS over Https (adanced - off)

[grundt]

Suggestion: maintain scroll position after sub-page navigation

Some settings have sub-pages
(ex. Privacy and security -> Connection and software security -> Advanced settings  > )

When you navigate back from the sub-page (ex. Advanced Settings) to the main-page (ex. Privacy and security), scroll position is not maintained ... you wind up back at the top of the main-page.

It would be less disorienting if scroll position was maintained.

[denyshon]

Hi, that's being worked on: https://bugzilla.mozilla.org/show_bug.cgi?id=2004488