Outlook Android shows different date on shared recurring appointments

My wife and I share our hotmail calendars with each other

For recurring appointments that she creates only, on any Android device using the Outlook app, the appointment is always 1 day later. It is consistent

The time is correct so it doesn't seem to be a timezone issue. In Windows settings, Android settings, and outlook.com settings the time zone is Sydney AEST

I've resynced the android apps. But tbh it has affected me for years, and has followed me across devices

Any ideas?

Pixel Outlook v5.2618.2
Samsung Outlook v5.2618.2

ty!