Index: wp-includes/js/wp-pointer.dev.js
===================================================================
--- wp-includes/js/wp-pointer.dev.js	(revision 19283)
+++ wp-includes/js/wp-pointer.dev.js	(working copy)
@@ -223,6 +223,10 @@
 			this.update().done( function() {
 				self._open( event );
 			});
+
+			$( window ).bind( 'scroll resize', function() {
+				self.reposition();
+			});
 		},
 
 		_open: function( event ) {