After T107399: Make top queue fully asynchronous, the tabs in https://noc.wikimedia.org/db.php appear as a plain, unstyled list of links.
The page first loads https://bits.wikimedia.org/www.mediawiki.org/load.php?modules=startup&only=scripts, then at the end of the body, calls mw.loader.using() to load the "jquery.ui.tabs" module (see https://phabricator.wikimedia.org/diffusion/OMWC/browse/master/docroot/noc/db.php). This fails because the "mediawiki" module has not yet finished loading.
An obvious workaround would be to add the window.RLQ boilerplate (and stop using bits.wikimedia.org), though as noted in T96499, only MediaWiki should be using ResourceLoader. Also, is it really necessary to use JS code for the tabs?