The issue doesn't occur in 1.17 so look at a missing category in a wiki with a newer version of MW, like http://translatewiki.net/wiki/Category:Users_in_London

The structure of the HTML is

<div id="bodyContent">
<div class="noarticletext">
</div>
</div>
<div id="mw-pages">
</div>

But it should be (like it is in 1.17, in edit mode and for existing categories)

<div id="bodyContent">
<div class="noarticletext">
</div>
<div id="mw-pages">
</div>
</div>

In Vector this causes a font size that is too big (#bodyContent scales down to 80% which don't apply to the page list). Also gadgets that look for the content in #bodyContent break.

Version: 1.20.x
Severity: normal