Thanks for the answer.
I just tested, and it only works if I disable the Extension:UsabilityInitiative in $IP/LocalSettings.php
#require_once("$IP/extensions/UsabilityInitiative/Vector/Vector.php");
Do you know something about this bug and how to fix it?
Greets
Try changing the width with CSS in MediaWiki:Vector.css, the default is 9em, on Wikipedia it's 14em.
#simpleSearch input#searchInput { width: 14em; }
hth Frank
PS The use of Firebug for such kind of modifications is highly recommended.
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