Index: mozilla/webtools/bugzilla/template/en/default/global/userselect.html.tmpl
===================================================================
RCS file: /cvsroot/mozilla/webtools/bugzilla/template/en/default/global/userselect.html.tmpl,v
retrieving revision 1.5
diff -u -r1.5 mozilla/webtools/bugzilla/template/en/default/global/userselect.html.tmpl
--- mozilla/webtools/bugzilla/template/en/default/global/userselect.html.tmpl
+++ mozilla/webtools/bugzilla/template/en/default/global/userselect.html.tmpl
@@ -40,8 +40,13 @@
   [% IF emptyok %]
     <option value=""></option>
   [% END %]
+  [% skip_cc = [] %]
+  [% FOREACH c = bug.cc %]
+    [% skip_cc.push(c) %]
+  [% END %]
   [% FOREACH tmpuser = user.get_userlist %]
-    [% IF tmpuser.visible OR value.match("\\b$tmpuser.login\\b") %]
+    [% IF !skip_cc.contains(tmpuser) AND
+          (tmpuser.visible OR value.match("\\b$tmpuser.login\\b")) %]
       <option value="[% tmpuser.login FILTER html %]"
         [% " selected=\"selected\"" IF value.match("\\b$tmpuser.login\\b") %]
       >[% tmpuser.identity FILTER html %]</option>