How to solve inconsistent display of published calendar on dashboard?


I have an issue with the calendar app embedded into a dashboard. My team is seeing a different view than I am, and this changes depending on the day. Today, here is what I see:

And here is what my team member is seeing:

We are both admins on the dashboard (though I am the owner), and the calendar is published (although we both have access and admin rights to the source sheet as well).

The widget is large enough that the screen does not have a scroll bar, so the issue is not that she needs to scroll up. She is unable to do so, the view is just stuck.

Does anyone have a solution?