Event with multiple months creates issues

[GalacticHero228]

Calendar of Events Plugin

If the event spans more than one month, the calendar will not function properly for the 3 months it spans.
There are 2 issues here:

1. The calendar stays stuck on the current month rather than changing to the previous or next month.
2. The event spanning multiple months is also the only one to show as the other events only have one of the 3 filters as shown below.

Example of multiple months for an event. Filters for 3 months as it spans July 10 - August 9th.

<h2 class="filter-2022-07 filter-2022-08 filter-2022-09">

If I run the calendar of events with events that do not span over multiple months, it seems to work fine. I only have an issue with spanning multiple months.

[ghost]

Do you have any other code? The code posted <h2 class="filter-2022-07 filter-2022-08 filter-2022-09"> seems unrelated to https://wet-boew.github.io/v4.0-ci/demos/cal-events/cal-events-en.html.