shortcode shows everything in stead of one category only

I use a category verborgen and shortcode
[tribe_events view=”list” events_per_page=”25″ category=”verborgen”]
to display only events of this category, as instructed on https://theeventscalendar.com/knowledgebase/k/embedding-calendar-views-with-the-tribe_events-shortcode/.
However my complete list of events is shown, including category verborgen.

About two weeks ago I made a similar shortcode that then worked (that was a couple of hours before TEC was updated to version 5.10.0), but now also shows every event.

Is this a bug in TEC 5.10.0?

Frank