Month/Year number of the day not updated

hello,

I installed calendar app some days ago, and today i discover the follow:

- the day of the month info is not updated on the year/month view:
 and this situation is always in place also if I update the view (half way sliding down and release the calendar view) . the same situation is still in place for a long while (also if I reboot the device) . no issue on the day/week views (check attached screenshots)

 this afternoon, i discovered that the new day of the month has been self-updated (could be the transition from the 11:59 a.m. to the 12:00 a.m time)
EDIT 4th Feb: not "from 11:59 to 12:00" but from 12:59 p.m. to 1:00 p.m.

Ubuntu phone BQ E5 OTA9

available for additional info supply end further tests.

Regards.

Danilo