We are getting a prompt for authentication when visiting a public page in confluence. It is only happening with the mobile view. But on both andriod and ios.
If I disable the Team Calendars add-on the problem goes away. Tracing with apache I see the following just before the prompt.
"GET /confluence/rest/calendar-services/1.0/tips?_=1484540666517 HTTP/1.1" 401 724