Calendar app crashes when trying to create a new event on iOS 27

I have an iPhone 17 Pro Max running iOS 27.0.1. Since updating to iOS 27, the Calendar app keeps crashing whenever I try to interact with an event.

If I tap the “+” button to create a new event, the app immediately crashes. The same thing happens if I long-press on a time slot.

I’ve now noticed that it also crashes when I tap on an existing event in my calendar. I can open the Calendar app and see all my events, but as soon as I try to open an existing event or create a new one, the app closes.

I’ve already restarted my iPhone, but the issue persists.

Is anyone else experiencing this on iOS 27 or 27.0.1? Is this a known bug, and has anyone found a workaround?