Right now, when you're done using GlobalPreferences and you want to get back to your regular Preferences page, there's no link for it -- you have to change it in the URL.
We should have a breadcrumb from GlobalPrefs, which looks like the breadcrumbs that we currently have on subpages: a small line at the top left, under the page title and "Wikipedia, the free encyclopedia" line, which says < Special:Preferences
Change 370152 had a related patch set uploaded (by Samwilson; owner: Samwilson):
[mediawiki/extensions/GlobalPreferences@master] [WiP] Refactor, clean up hooks, improve UI
What about sort of combining the back link with the form section header?
So that each section on the local-prefs form links to the corresponding section on the global-prefs form, and vice versa.
Something like: F9199500
And the "this is a global pref; ya can't set it here" link also goes to the matching preferences tab.
Change 376479 had a related patch set uploaded (by Samwilson; owner: Samwilson):
[mediawiki/extensions/GlobalPreferences@master] Add breadcrumb as subpage subtitle, to go back to Preferences
Change 376479 merged by jenkins-bot:
[mediawiki/extensions/GlobalPreferences@master] Add breadcrumb as subpage subtitle, to go back to Preferences