Hello,
Only in vector skin, many Wikipedias are now displaying "Navigation Menu" (different languages) at the end of the side bar after content ends. First noticed that in Arabic Wikipedia and got it fixed by adding #mw-navigation h2 { position: absolute; top: -9999px; } to mediawiki:vector.css which I got by examining the pages which didn't have this bug including my watchlist and mediawiki messages (but not including its history)
The problem doesn't exist in some other Wikipedias, including English and Spanish. Any idea how did that happen and what can we do to make a global fix?