Same for SQL Server 2019 CU13. Ola's script still reports the error for msdb:

Messages from the script:

Date and time: 2021-11-13 11:15:49
Database: [msdb]
State: ONLINE
Standby: No
Updateability:...

• This reply was modified 3 years, 5 months ago by  Dex. Reason: addendum
• This reply was modified 3 years, 5 months ago by  Dex. Reason: addendum
• This reply was modified 3 years, 5 months ago by  Dex. Reason: Update to CU13, new testing