If you have a personal stylesheet set, it will show up in the inspector's sidebar as an inline stylesheet. It should be classified as a non-editable UA sheet.
Created attachment 21364 [details] Proposed patch This patch assumes that user stylesheets are always attached to the document and are the only stylesheets in that case. I hope this is true.
<rdar://problem/5967637>
Thanks! Committed revision 34185.