Bug 481767 - Tag field overlay issue when 2 or more bookmarks in the same tag, r+sr=neil a=blocking191

toolkit/content/xul.css

@@ -792,6 +792,8 @@ popup[type="autocomplete"][hidden="true"] {
 .autocomplete-result-popupset {
   max-width: 0px;
   width: 0 !important;
+  min-width: 0%;
+  min-height: 0%;
 }
 
 /********** colorpicker **********/