When visiting Special:Preferences the global.css should be loaded, the same way as the local css pages are loaded.
It is okay, when the javascript is no loaded, because that is also not done for local js pages, but css should be. Thanks.
Version: unspecified
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=68521
https://bugzilla.wikimedia.org/show_bug.cgi?id=70672