I don’t think the updated file actually has the updated dolly rig with the camera offset bone control on it. I’m using 2.90.1 and I downloaded the updated file that has the annotations about it being the new rig but I don’t see the camera offset bone in there. I deleted the rig object and added a new one and it had the offset bone so I think the project file might still be using the old dolly rig.
Maybe I’m missing it, idk I’ve got quarantine brain right now so ignore me if I’m crazy here.
