iOS 16 - Exception Thrown for processContentKeyResponse

Issue:

I am supporting an iOS application that streams Fairplay DRM protected content.

On iOS 16 devices, I am seeing intermittent exceptions thrown when trying to process the CKC returned by the license server.

The thrown exception is as follows:

-[AVContentKeyRequest processContentKeyResponse:] AVContentKeySession's keySystem is not same as that of keyResponse

This issue does not occur on older devices (we support iOS 13, 14, 15)

I am unable to find documentation about this error so any insight is appreciated:

High-Level Code Overview

• Use ContentKeyRequest to request an application certificate
• Use returned Cert to call makeStreamingContentKeyRequestData
• Use returned data to request FairPlay license
• Use returned CKC to generate AVContentKeyResponse (i.e. AVContentKeyResponse(fairPlayStreamingKeyResponseData:_))
• Call processContentKeyResponse(_)
• App crash/exception thrown when callling processContentKeyResponse

I am seeing other issues related to DRM and iOS 16 but these are specific to downloaded and offline content which do not match my use case.