Hi Daniel,
I could have sworn I replied to this yesterday… not sure why it didn’t post. There are two versions of the list widget and it’s overrides, the regular one (/wp-content/plugins/the-events-calendar/views/events-list-load-widget-display.php) and the PRO one (/wp-content/plugins/events-calendar-pro/views/events-advanced-list-load-widget-display.php
If you have PRO activated the regular widget is not used and the PRO is so you’ll want to override it instead. Make sense?
Try that and let me know if you’re still having trouble.
– Jonah