Index: /CKEditor/trunk/_source/plugins/selection/plugin.js
===================================================================
--- /CKEditor/trunk/_source/plugins/selection/plugin.js	(revision 7628)
+++ /CKEditor/trunk/_source/plugins/selection/plugin.js	(revision 7629)
@@ -470,6 +470,8 @@
 
 									// We're sure that the click happens at the region
-									// below body, but not on scrollbar.
-									if ( evt.getTarget().is( 'html' )  )
+									// outside body, but not on scrollbar.
+									if ( evt.getTarget().is( 'html' ) &&
+											 evt.$.x < html.$.clientWidth &&
+											 evt.$.y < html.$.clientHeight )
 									{
 										// Start to build the text range.