See attachment. When you load it, the page should be blank (it works in FF4). However, in tip of tree chrome/webkit, it displays the span, even though the web inspector shows that the CSS rule with display: none is applied to the <span>. The motivation for this report/reduction is that this apparent bug is causing issues for chrome://settings.
Created attachment 82574 [details] reduction
dupe of 12519
*** This bug has been marked as a duplicate of bug 12519 ***