Yes I have run into this issue myself. It is a public resource, if you're not logged in at all its fine or if you're recently logged in its fine.
It's the same reauth you sometimes get when visiting a public blogger site. It is an edge case, but quite unpredictable and hard to track down from client reports.
It's the same reauth you sometimes get when visiting a public blogger site. It is an edge case, but quite unpredictable and hard to track down from client reports.