Hi Kenneth!
Thanks for getting in touch with us. Let me help you with the troubleshooting.
I’m not able to reproduce the issue in my local installation.
Does it also happen when creating an event from the backend?
First, could you please enable WP_DEBUG and WP_DEBUG_LOG ? This will create a debug.log file inside the /wp-content directory.
After that, try reproducing the issue a few times, so that in case there is an error, it will be saved into the debug.log file. Please share that log file with us so we can see if any problem from there.
Also, to make sure we are not dealing with a conflict, please go through the steps outlined in our Testing for Conflicts guide and see if you can reproduce the same issue under default conditions.
We always suggest to setup a dev/staging site so you can test things out without disrupting the live site.
Let me know about that.
Thanks,
Victor