Ticket #5434: 5434_2.patch

_source/core/env.js

@@ -75 +75 @@
 
                         isCustomDomain : function()
                         {
-                                return this.ie && document.domain != window.location.hostname;
+                                var domain = document.domain,
+                                        hostname = window.location.hostname;
+
+                                return this.ie &&
+                                        domain != hostname &&
+                                        domain != ( '[' + hostname + ']' );     // IPv6 IP support (#5434)
                         }
                 };