when you are using sso that means that the bi content served via sso server for example
http://ohs_server:ohs_port/analytics links to bi
http://obiee_server:obieeport/analytics url is still accessible and links also to bi.
check if you have bookmarked the sso url and not the obiee url.
Also check your configuration and post more information about the topology of the servers, if the problem still occurs
I've tried both OBIEE as well as SSO URL and it doesn't work with either.
Please let me know what config shall I post that might help you help me.