Fix scroll_to_bottom

IPython/html/static/notebook/js/widgets/string.js

@@ -54,7 +54,7 b' define(["notebook/js/widget"], function(widget_manager){'
             this.$el_to_style = this.$textbox; // Set default element to style
             this.update(); // Set defaults.
 
-            this.on_msg();
+            this.model.on_msg($.proxy(this._handle_textarea_msg, this));
         },
 
 

IPython/html/widgets/widget_string.py

@@ -40,7 +40,7 b' class StringWidget(Widget):'
 
 
     def scroll_to_bottom(self):
-        self._comm.send({"method": "scroll_to_bottom"})
+        self.send({"method": "scroll_to_bottom"})
 
 
     def _handle_string_msg(self, content):