User blog comment:Kirkburn/Technical Update: November 11, 2014/@comment-24253265-20141115170241/@comment-452-20141115170613

As noted in the blog post, use Special:Contact to report issues to staff.

edit: However, since the skin switch button + display clock are addons, and not core features, it's not really an issue for Wikia Staff, it's an issue for the authors of those scripts, so you should talk to them about it.

Edit: What you said in the thread you linked seems to indicate that no scripts at all are loading for monobook, so this may be an issue for Wikia Staff after all.