Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
An idea is to run SSL Labs test for browsers https://www.ssllabs.com/ssltest/viewMyClient.htmlRun the test with and without SSL WSA Proxy and you see the difference.
I have the same problem embedding a flash magazine from issuu.com to our website. WSA blocked the connection to issuu. Had to make an auth exempt rule for the host e.issuu.com. Now it works.