There are some Event Tab’s Visible In Author View/Edit View and not in Publish View after Activation.
Description:- A user can see Event Login Option and Registration Confirmation in the Author View ( Where you can edit the page ) and not in the Publish view after activation. Why?
The answer to this question is :
Event Login Page will not be visible on Publish view because login page does not make any sense to an end user unless he/she registers for the event. In author view, it was necessary in order to provider a way to navigate (and edit) the login page. We only send event login page URL after successful registration to the event via registration confirmation email and so we do not show it in page menu on publish mode.
Registration Confirmation This page tab is shown to end user after successful registration and Event host can associate this to registration component so that after registration user will be redirected to this page. So this page is for event host so that they can customize its text and page properties. That’s why it is not visible in page menu component on publish mode.
I hope this helps understand some logic behind why some tabs are not visible on the Event publish View.