Google webmaster help forums receiving some confirmed reports that the some of the browsers are not displaying the Google Webmaster tools.
Confirming the issue Pierre Far of Google saying:
Thanks for the report. We know of an issue affecting how some browsers fail to display the new home page. Just to be sure what you’re experiencing is not a new issue, can you please take a screenshot of how it’s breaking for you? It would also help if you mention which version of Windows you’re running.
You can see the picture, how the home page loads in Internet Explorer 9 using Windows 7:
Experts haven’t fixed any estimated time for this big since this is not reported widely or complained about either.
Forum Discussed at Google Webmaster Help.