Calendar keep turning on alerts I have turned off
I have a repeating appointment on an iCloud calendar that is shared between my Mac and iPhone. Both calendars have the default alert time preference set to "5 minutes before". If I modify the calendar entry to remove the alert (for all events) on one device, it succeeds on that device, but has the OPPOSITE effect on the other device! It's like the other device sees the event has been modified, and RE-APPLIES the default alert preference I have set for that device.
This makes it essentially impossible to remove alerts from that appointment on all my devices. I have filed a bug report with Apple, but in the meantime does anyone know how to stop this insane behavior? I'm not interested in workarounds like destroying and re-creating the appointment, or setting the default alert time preference to "none".
Thanks.
MacBook Pro 16″, macOS 12.3