Exchange calendar not synchronizing on Xperia 10 II

REPRODUCIBILITY (% or how often): always
BUILD ID = OS VERSION (Settings > About product): 4.1.0
HARDWARE (XA2, X10, X10 II, …): X10 II
UI LANGUAGE:
REGRESSION: (compared to previous public release: Yes, No, ?): Yes

DESCRIPTION: the exchange calendar synchronization is not working on Sony Xperia 10 II

PRECONDITIONS:

STEPS TO REPRODUCE:

  1. Configure Exchange account (regular exchange and not O365)
  2. Launch synchronization
  3. activate calendar sync

EXPECTED RESULT:

  • Emails synchronize
  • Exchange calendar visible in “Manager calendars” menu
  • Calendar events synchronize

ACTUAL RESULT:

  • Emails synchronize
  • Exchange calendar is visible in “Manager calendars” menu
  • Calendar events do NOT synchronize on device

ADDITIONAL INFORMATION:

Tried created a calendar event on Exchange calendar from the device to trigger sync. Event is not sent to server.

The calendar is not synchronizing, but only the events that were recently updated are coming through. For example, an event scheduled on 25/09/2021 which was created in the agenda this summer did not synchronize. I updated the event an hour ago on the Exchange server, and now it did synchronize on the Xperia 10 II.