iOS 17.3 Stands Out from Other OS Updates with Stolen Device Protection

Maybe this is a little off-topic, but this article prompted me to immediately update my iPhone to iOS 17.3. After this update I discovered that I can no longer successfully search my calendar. I’m wondering if this is a known issue or if anyone has experienced this problem.

Essentially, no matter what I search for, the response is “No Results”. I have several calendars and the weird thing is that through experimentation I discovered that it is actually searching two seldom used calendars, but not all of my calendars and not my main calendars. My two main calendars, my “Personal Calendar” that I share with my wife, and my private “Work Calendar” will return no results, but a Calendar of Japanese Holiday schedules that I subscribe to, and an NFL Football Schedule Calendar that I subscribe to WILL return results (though that’s not much use really). I’ve tried turning calendars on and off, restarting my phone etc. but nothing helps.

Anybody else?