Developer here. The only time we show you the permission screen is if the two critical permissions, Photo Library and Camera, are not granted. Location is completely optional, but allows you to geo tag photos. If you find that isn't the case, that's absolutely a bug, and we'll look into what's going on.
Sorry, I made an assumption (that all three permissions were necessary) after granting camera permissions but not photo library or location permissions. The UI was not clear about what was actually required, and the "Continue" button was enabled but didn't get me anywhere.
Look, it's 2020 and tech is getting so human-hostile in so many different ways. I think it behooves us to make sure there's always a way our software can be used no matter how restrictive our users are with permissions.
