Front End Sorting/Viewing

Is there any known issue with selections being able to be selected on the front end? (categories, tags, month, type of view?)

When I am logged into my site and am viewing the front end of the calendar… I am able to clearly select any option on the calendar that I would like. However, when a “Non Logged-in User” is viewing the calendar from the front end, they can SEE the selections but they can NOT change the selections.

We have tried multiple computers and multiple browsers.
(windows and Mac)(Chrome, FireFox, Edge and Safari)