Thread:Project:Support desk/IE11 display problems/reply (4)

You say you use a custom skin, which is based on monobook - while updating MediaWiki would be wise (security-wise), it will not fix your custom skin.

I do not know what causes the problem for you exactly, but if I remember correctly the search box in monobook is located below the sidebar anyway. Meaning: Check if it works in your wiki with monobook and then take a tool like Firebug and see, which CSS styles are different in your custom skin compared to monobook. Especially paddings and margins are interesting; maybe you also did something stange with postion: ....

You say that this problem appears in Firefox and in current versions of IE. That makes me think that it is really a "bug" in the default styles of your custom skin; not a browser hack. Maybe it is even the other way round: You use some browser hack for old IEs and that fixes it for them - keeping it broken for basically any browser, which does intereprete CSS as expected out of the box.