Hi Matt!
Thanks for reaching out. I’m sorry you are experiencing that issue.
I have made some tests and could reproduce the same issue, but only with Events Calendar PRO 4.3.4. After updating to the latest version this issue is no longer present, so this might have been fixed in one of the subsequent releases.
I know you can’t udpate your plugin because of the Piklist conflict you experience, so I have raised a flag in the corresponding report to see if we can get things moving faster.
We will post updates about this conflict in your other thread here > https://theeventscalendar.com/support/forums/topic/500-error-after-updating-recurring-events/
Let me know if you have any follow up questions.
Best,
Victor