Ticket #9022: 9022.patch

_source/plugins/selection/plugin.js

@@ -449 +449 @@
                                                                         // Start to build the text range.
                                                                         var textRng = body.$.createTextRange();
                                                                         textRng.moveToPoint( evt.x, evt.y );
+                                                                        // IE7 could produce wrong selection when document is empty. (#9022)
+                                                                        !body.getChildCount() && textRng.moveStart( 'character', 1 );
                                                                         textRng.select();
 
                                                                         html.on( 'mousemove', onHover );