NWC Start form user context and data lookup control

With nintex workflow cloud start forms I've been testing with the new data lookup control and seem to be missing something.

I have an authenticated NWC start form.

I want to take the email address of the authenticated form user context to pass in as a filter parameter.

My data source I'm testing with is Azure AD - query user

Trying a couple of different ways.

When I try to create a variable and set the value there is a context tab but nothing listed. (There are also Functions and Form tabs)

I've also tried with an Email control and Text - Short control to set the default value. It shows a context tab but no items listed on the context tab to select from.

Any ideas?

Do other see anything on the context tabs in their tennacies?

@robbiemunro Could you shed some light on this one?