Yes, it works there for me as well. All I know is that on my end (with v6.4 and v6.6), if I take out the URLType it works fine in Gecko browsers, but as soon as I put it back it places a relative URL into the href to the anchor.

 

I have tested this over and over among 4 different geckos and the result is the same. Also, I can have CE open in HTML mode, make the change, press F5, and the link to the anchor changes right there in front of me (from relative to correct).

 

I don't have anything out of the ordinary in my control syntax, and I have tried removing various params but nothing works unless I remove the URLType:

 

 <FTB:Editor id="txtMessage" URLType="SiteRelative" UseRelativeLinks="True" RemoveServerNamesFromUrl="True" runat="server"
    Width="670px" EnableStripScriptTags="False" Height="500px" AutoConfigure="Full_noform" ContextMenuMode="Full_noform"></FTB:Editor>