Get Reports REST api not working - Showing 400 Bad Request

I am having the exact same problem. I get an HTTP 400 Bad Request response from the API even though I am passing in the GroupId and the ReportId correctly. All other APIs are working. For example Get Reports in Group (https://api.powerbi.com/v1.0/myorg/groups/{{groupId}}/reports) work as expected. However when I try and use Get Report in Group (https://api.powerbi.com/v1.0/myorg/groups/{{groupId}}/reports/{{reportId}}) I get back an HTTP 400. I am using Postman to test this and I can confirm that I have double checked the GroupId and ReportId.

I also have all permissions assigned to my specific user. Something is wrong with this AI endpoint,

UPDATE: This has been brought up in the Developer forum and it is indeed a bug. The workaround (and I have verified it works in Postman) is to add the Header "Accept" and set it's value to "none".