We want to change this now (because of performance issues) and we want use the standard url : https://finde-deinen-malkurs.de/kurse/ (list view). So, the first page is fine (right sequence). But, if you use the arrow “next events” the events on the second and all following pages are events are in a completely messed sequence. It starts with December 2018 although we have a lot of events already in January and the following months.
the issue is solved. After update of the setting in the backend (yes = show only the first occurance of an event series) the list view is in the right sequence.