Thanks for pointing out this issue.
Based on your description, this behavior may be related to a temporary sync or display inconsistency in Microsoft Bookings, where customer details appear correctly in the Calendar view but not in the Customer page.
To help narrow this down, please try the following:
- Refresh the Bookings page and check again
- Access Bookings in an InPrivate/ Incognito browser session
- Try a different browser or device
- Verify if the issue occurs for all bookings or only specific entries
- Check if editing the booking restores the customer name
If the issue persists across all environments, this may indicate a service-side issue. In that case, I recommend raising a support request with Microsoft so they can investigate further on the backend.