Invoice Templates -- Why can I not see the dropdown menu in the top-right screen of my Edit screen to change invoice templates?

Invoice Templates -- Why can I not see the dropdown menu in the top-right screen of my Edit screen to change invoice templates?

In Edit mode, other users in our department see a dropdown screen in the top-right corner which allows them to change templates for the invoice.  On mine, it is blank.  The "Edit" row is there at the top, but there is nothing to the right of it all the way over to the right side of the screen.  Can someone explain why and how I can remedy this?  Thank you.