Identities never auto fill anymore

Hi, I have 2 identities, and just created a new test one, and they used to work well in autofill (command - backslash shortcut) the same way logins do.  It would fill out Name, address, etc. 

For a long time now, they haven't worked.  If I choose one, instead of filling, it just opens in a popup. 

It's annoying enough that I will abandon the website rather than cut and paste all my details again. 

Any help appreciated.   I can send on the page structure JSON for an example if you tell me how to do that.