Since the february view, calendar weeks are off by one. It seems like the algorithm used doesn't expect months to both start and end flush with the week. All following months seem affected as well.
This is with "English (United Kingdom)" as the system language. Changing it to "English (United States)" makes weeks start on sunday and end on saturday, and this bug does not appear for 2021.
Since the february view, calendar weeks are off by one. It seems like the algorithm used doesn't expect months to both start and end flush with the week. All following months seem affected as well.