Persist "open" attribute in bookmark's panel, and be sure to set "status" and "type" attributes so that we get proper icons!

suite/common/bookmarks/bm-panel.xul

@@ -55,7 +55,7 @@
 
         <rule>
           <treechildren>
-            <treeitem uri="...">
+            <treeitem uri="..." persist="open" web:status="rdf:http://home.netscape.com/WEB-rdf#status" rdf:type="rdf:http://www.w3.org/1999/02/22-rdf-syntax-ns#type" loading="rdf:http://home.netscape.com/NC-rdf#loading">
               <treerow>
                 <treecell indent="true" value="rdf:http://home.netscape.com/NC-rdf#Name" />
               </treerow>

xpfe/components/bookmarks/resources/bm-panel.xul

@@ -55,7 +55,7 @@
 
         <rule>
           <treechildren>
-            <treeitem uri="...">
+            <treeitem uri="..." persist="open" web:status="rdf:http://home.netscape.com/WEB-rdf#status" rdf:type="rdf:http://www.w3.org/1999/02/22-rdf-syntax-ns#type" loading="rdf:http://home.netscape.com/NC-rdf#loading">
               <treerow>
                 <treecell indent="true" value="rdf:http://home.netscape.com/NC-rdf#Name" />
               </treerow>