Me too. I’m assuming you’re the latest version of the plugin (if not, tell me the version) and that you’ve rolled back any recent modifications you’ve made.
For example, it appears you’re using the Location field for notes, and since Location caches address, I’m not entirely sure how the interaction would unfold. Is using the location field in that manner new since the last time single_meeting page loaded?
I’m not seeing any console or other error, so if you can’t track down the problem to a change you’ve made, I suggest looking at your permalinks and seeing if something got messed up with those. If nothing else, go into the permalink page and save it (which often resets problematic links).
Although I’m grasping for straws here, try deactivating (not delete) the plugin and reactivate it. See if that makes any different.
Let me know where you stand after that? Might be a good idea to move the convo over to our new support site where we can get some screen caps from you.