For some reason the CSS for the Preferences page is nog loading for me on English Wikipedia.
It's like the module isn't even added to the page, I only see it in the RL definitions list. The only CSS file included on the page is: https://bits.wikimedia.org/en.wikipedia.org/load.php?debug=false&lang=en&modules=ext.betaFeatures.styles%7Cext.echo.badge%7Cext.uls.nojs%7Cext.visualEditor.viewPageTarget.noscript%7Cext.wikihiero%2CwikimediaBadges%7Cmediawiki.legacy.commonPrint%2Cshared%7Cmediawiki.sectionAnchor%7Cmediawiki.skinning.interface%7Cmediawiki.ui.button%2Ccheckbox%7Cskins.vector.styles&only=styles&skin=vector&*