Http referer doesn't work after upgrade to 7.0.3

Hi,

recently we upgraded from 7.0.2 to 7.0.3 and HTTP_referer doesn’t seem to work as expected. Is there any known bug in 7.0.3 as it did work in 7.0.2

The funny part is it automatically redirects to defaul server page. Any help/suggestions would be useful.