ArcGIS for Server API Access with Referrer Token allows invalid Domain Checks.
Bug ID Number
November 20, 2015
July 28, 2020
In Product Plan
The issue has been added to the development team's backlog. The goal for issues with this status is to address them in a near-term release (next release or two). Check the issue's Additional Information or Alternate Solution section to see if there is helpful information until it can be fully addressed.