Hi Erik!
Thanks for reaching out to us!
Let me help you with that.
By default, Filter Bar works without a submit button by auto-submitting when applying a filter. Are you making any customization to the filter bar? If not, then this could be an issue, so could you please share with us a link to the calendar so we can see if we find anything strange?
Also, when coming back, could you please share with us your system info by following this guide > https://theeventscalendar.com/knowledgebase/sharing-sys-info/
Thanks,
Victor