"More" link not showing on all days

We’re having an issue with the “more” link not showing up on certain days of the calendar despite there being more events than what are displayed. The strange thing is, it works on other days. It’s looking like multi-day events are what’s possibly throwing it off.

As an interim solution, we’ve adjusted the number of events the calendar shows, but this leaves the calendar looking gigantic and a bit messy.

Here is where the calendar is:

http://buyclarkcounty.com/events-calendar/

Here is a screenshot of what happens if you change the settings to display 4 events on a day:

http://www.awesomescreenshot.com/image/333443/30c42fd2c11673e0d3d41511ec0c3009

As you can see, the more button appears on Monday the 15 and works for that day, but the additional events on Wednesday the 18th simply disappear.

Thoughts? Suggestions? We’re using the latest version of the calendar in conjunction with the latest version of the events manager.

https://wordpress.org/plugins/wp-fullcalendar/