Ticket #3344: 3344.patch

_source/plugins/styles/plugin.js

@@ -280 +280 @@
                 var boundaryNodes = range.getBoundaryNodes();
                 var firstNode = boundaryNodes.startNode;
                 var lastNode = boundaryNodes.endNode.getNextSourceNode( true );
-
+                
+                // Probably the document end is reached, we need a marker node.  
+                if ( !lastNode )
+                {
+                                lastNode = document.createText( '' );
+                                lastNode.insertAfter( range.endContainer );
+                }
                 // The detection algorithm below skips the contents inside bookmark nodes, so
                 // we'll need to make sure lastNode isn't the   inside a bookmark node.
                 var lastParent = lastNode.getParent();