zoho.loginuserid not working for customer portal

zoho.loginuserid not working for customer portal

A few hours ago if I logged in to my customer portal app, a form with

Email=zoho.loginuserid;

would correctly display the email of the user. Now it's simply blank. 

However, if I place <%=zoho.loginuserid%> on an html page, the email is displayed to the portal user.

Something must be broken with the customer portal?

I submitted a support ticket and shared the app with zoho.

Cheers,
John Whitney