Wikimedia Bugzilla is closed!

This was first reported here:

http://old.nabble.com/-SF--Combobox-widget-looks-awkward-tp31705311p31705311.html

Yaron has some guesses about the cause here:

http://old.nabble.com/forum/ViewPost.jtp?post=31715682&framed=y

"My guess is that this is due to the higher MediaWiki version, and the 
ResourceLoader, in some way. It could be that files are getting called in 
the wrong order - SF's CSS changes to override jQuery's CSS are called 
before the jQuery CSS. 

There's another problem, where the HTML in the dropdown when you actually 
start typing in the combobox is getting escaped - I've never seen that 
before either, but my guess is that it's due to the same thing."

It is also mentioned that changing to the monobook skin resolves the issue.