Thread:StephenTX/@comment-25046890-20160110060508/@comment-10228869-20160115014323

NoWayThisUsernameIsAlreadyOwnedBySomeone wrote: That's because it uses the deprecated 3rd-party class (and that's disabled here) instead of the built-in  ; the last significant update to that template happened three years ago. I found a source that fixed the template to use mw-collapsible, and now all the new navboxes here collapse correctly. Thanks for the hint!