Is their any change/rollback for audience in access token, which was expected to be "https://graph.microsoft.com"?

Question

I am writing to seek clarification regarding an issue I encountered with the access token obtained through the following request:

Request Path: /sites/SITE_NAME/_api/Microsoft.SharePoint.Internal.ClientSideComponent.Token.AcquireOBOToken?resource=%27https://graph.microsoft.com%27&clientId=<client_id>

Until last week, the expected audience for the access token was 'https://graph.microsoft.com'. However, I received a token with the value '00000003-0000-0000-c000-000000000000' instead. As of October 8th, the request has started returning the expected audience 'https://graph.microsoft.com' again, despite no changes made to my configurations or code on my end.

Could you please confirm if there were any changes or rollbacks made by Microsoft that could explain this inconsistency? This issue is critical for my application, and I would appreciate your prompt response.