Ticket #4611: 4611_2.patch

_source/plugins/selection/plugin.js

@@ -498 +498 @@
                                                 // breaking character counting logic below. (#3949)
                                                 var distance = testRange.text.replace( /(\r\n|\r)/g, '\n' ).length;
 
-                                                while ( distance > 0 )
-                                                        distance -= siblings[ --i ].nodeValue.length;
+                                                try
+                                                {
+                                                        while ( distance > 0 )
+                                                                distance -= siblings[ --i ].nodeValue.length;
+                                                }
+                                                catch( e )
+                                                {
+                                                        distance = 0;
+                                                }
 
                                                 if ( distance === 0 )
                                                 {