_isEmpty producing unexpected results with Whole Number

(Bug, Closed -> Misunderstanding, Priority: Critical, Test Status: No automated tests yet , Reported By Bad Link: Thing 3y284of not found, )
Summary: Closely related to https://www.querki.net/u/jducoeur/alpha-issue-tracking/#!isNonEmpty-doesnt-produce-expected-results-with-Text
Space Stray Bullets, Thing Reference: Properties End Page and End Panel are both Optional Whole Numbers. When those properties have never been filled in, and contain no data, they do not register as _isEmpty.