The javascript variable wgCanonicalSpecialPageName is set wrong on pages named like special pages.
Look at [[mw:Manual:Watchlist]]: wgCanonicalSpecialPageName="Watchlist", wgTitle="Watchlist"
but we are not an the watchlist ([[mw:Special:Watchlist]]) that breaks js with only look for the canonical name.
Version: unspecified
Severity: enhancement
URL: http://www.mediawiki.org/wiki/Manual:Watchlist