diff --git a/static/js/Editor.js b/static/js/Editor.js
index 6c6caed..9933ec8 100644
--- a/static/js/Editor.js
+++ b/static/js/Editor.js
@@ -334,22 +334,26 @@ Editor.prototype.add_selection_bookmark = function () {
     // mark the nodes that are start and end containers for the current range. we have to mark the
     // parent node instead of the start/end container itself, because text nodes can't have classes
     var parent_node = range.startContainer.parentNode
-    addElementClass( parent_node, "range_start_container" );
-    for ( var i in parent_node.childNodes ) {
-      var child_node = parent_node.childNodes[ i ];
-      if ( child_node == range.startContainer ) {
-        range.start_child_offset = i;
-        break;
+    if ( !hasElementClass( parent_node, "static_note_div" ) ) {
+      addElementClass( parent_node, "range_start_container" );
+      for ( var i in parent_node.childNodes ) {
+        var child_node = parent_node.childNodes[ i ];
+        if ( child_node == range.startContainer ) {
+          range.start_child_offset = i;
+          break;
+        }
       }
     }
 
     var parent_node = range.endContainer.parentNode
-    addElementClass( parent_node, "range_end_container" );
-    for ( var i in parent_node.childNodes ) {
-      var child_node = parent_node.childNodes[ i ];
-      if ( child_node == range.endContainer ) {
-        range.end_child_offset = i;
-        break;
+    if ( !hasElementClass( parent_node, "static_note_div" ) ) {
+      addElementClass( parent_node, "range_end_container" );
+      for ( var i in parent_node.childNodes ) {
+        var child_node = parent_node.childNodes[ i ];
+        if ( child_node == range.endContainer ) {
+          range.end_child_offset = i;
+          break;
+        }
       }
     }