Calendar Permissions Suddenly Different than Page Permissions?

We use a list-based permission setting for our SharePoint site (i.e., an all-employee email list). All employees can access key pages, like our hub site and our news page. All of a sudden, those employees without editor permissions cannot see the calendars on those pages even though they can still see the page content. The calendar field is there, but shows up empty even though there are events. We have not changed permissions. Is anyone else having this challenge?