Hi Monty,
Thanks for reaching out. I cannot recreate this issue on my local site or on our demo site, and so this appears to be a result of your theme or other CSS on your site, like perhaps some styles coming from other plugins.
We are not able to help with such issues unfortunately, as elaborated upon here: https://theeventscalendar.com/knowledgebase/what-support-is-provided-for-license-holders/
I took a look at your site nonetheless, to try and identify the exact reason from within CSS that is causing this. But I was not able to identify the culprit.
So the best bet is to contact your theme author for assistance as to why their theme CSS is doing this—or they may at least be able to identify the plugin whose CSS is causing this.
Please let me know if there are any other issues or questions I can try to help with.
George