Search Filter issue

We recently launched a new WP site which uses the Events Calendar plugin. This works pretty well, except that we’re having an issue the search filter. When I go to the main calendar page (Month view), all seems fine. Without entering any filters, I then use the link at the bottom to look a the next or previous month. At that point, a filter is applied that uses the placeholder value of the Search filter as a proper value. This doesn’t make sense.
Since we don’t have many events per month, I then tried to disable the filter by ticking the box “Disable the Event Search Bar” in the Display settings of the plugin. This seems to work well when I open the calendar for any specific category, but not for the main calendar page where I keep seeing the Search filter.
What are my options to fix/work around these issues?
This is the link to our calendar: https://www.toastmastersantwerpen.be/calendar