Cross origin framing does not work from 2.6 on (no replies)

Hello,

iframe from piwik does not show up when empedded on a different domain since update to 2.6
Tried with 2.7 b1 and still doesn't work.

checked the response headers from the piwik iframe and it says:
x-frame-options: sameorigin

May it be that the following is missing?
<?php
header('X-Frame-Options: GOFORIT');
?>

Thanks