Data fields not displaying in Form: Properties: Edit Fields

[dscience29 · Accepted solution]

As a final update to this, it turns out that my Google Chrome browser was out-of-date.  Once I updated it to the latest version and relaunched the browser, I could see all of the data fields and data sources without issue.  Thanks to everyone for their contributions and insights, and I apologize that this was much ado about nothing!