Hi,
Yep the versions are fine. The important part is the first two numbers so 3.12 to 3.12.3 is good. 3.11 to 3.12 could create issues.
And thanks for the screencast. We were talking about two different areas.
Ok so the Recurring Events All page…
A good place to start to narrow this down is to follow our testing for conflicts guide:
Testing Conflicts With Themes and Other Plugins
And see if that can narrow down the cause of this.
When you follow the guide, please try on a new recurring event as well.
Can you please do that and let me know what you find out.
Thanks