Search settings were apparently moved out of the preferences and into the 'advanced' options of the search itself. Given that the average user will never actually go to the 'advanced' options and instead just click on the button for whatever they're actually searching for (content, multimedia, or just anything), this does not make the settings discoverable and leads the user to assume that there are no settings, and that, even if all they ever search for is under 'everything', they will simply need to click on 'everything' after an initial wrong-namespace search every single time they search, when this is simply not the case.
The search settings save option needs to be made more discoverable, perhaps by adding some access to or other indication of its existence from the other searches.