Documents not embedding with PDF Embed API using iOS 18

Hello,

We are doing some heavy testing of our implementation of the PDF Embed API in our web site and have found that when embedding a pdf document with the latest iOS version, iOS 18, there is some very strange behavior. The document initially loads for less than a second, and then a modal overlay displays reading the following:

File preview not available

This application domain ([DOMAIN]) is not authorized to use the provided PDF Embed API Client ID.

NOTE: This should not be a Domain/Client ID authorization issue as we are using the same already provisioned domain as when testing in other working device/browser combinations. This seems like a bug. Is this known and/or will it be addressed?

Please let us know as soon as possible.

Thank you!

Fred