OK - this is really odd.
I created a test event - and it displayed fine. Then I changed the date of this event to match the one that wasn’t displaying - and it also had the same problem - so it appears to be related to the date of the event.
The event in question runs from 3rd Feb 2026 to 5th Feb 2026. If I change it to the previous or following week it displays fine!
Then I tried extending the end date - and got this:
