Good evening William and welcome back!
Thank you for reaching out to us.
I would love to help you with this topic.
I believe this is caused by your settings found underĀ Events -> Settings -> General.
More specifically, take a look atĀ Create recurring events in advance for
Changes made to that setting are not immediate (they work with WP Cron), but can be triggered by re-saving the event.
In other words, new recurring events are created automatically in the background in accordance to that setting.
Let me know if that helps.
Have a great day!
Geoff B.