Thanks Brook!
I was thinking the same with the use of the word “agenda” too much, but when using “event” or “events” the same problem occurs.
Thanks for the link on testing for a conflict. Very clear instructions! ?? I tested the site, and since I was NOT able to recreate the problem in Twenty Thirteen, and I WAS able to recreate it after switching back to Enfold, before I activated any plugins again, it should be a conflict with the theme I am using.
I am using the Enfold theme. Any ideas on what to do next?