You are right, I twisted the effects. Is this happening consistently for the requests in your App Engine? If so, I suggest you create a ticket in the Cloud Support [1] so you can share information such as your project-id, bucket names, ... through a private channel.
Best regards, Juan Carlos [1] https://cloud.google.com/support-hub -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/78d19079-2b81-4a0f-a732-8be538dde183o%40googlegroups.com.