Userstat Plugin CPU_TIME much higher than BUSY_TIME in versions 10.11.X and beyond

Hello,

We are using the userstat plugin to track users mysql cpu minutes. Since upgrading from MariaDB 10.6 to 10.11, we noticed increased CPU_TIME in the information_schema.user_statistics table. The CPU_TIME column reads as much as 10 times higher than BUSY_TIME.
In versions 10.6 and below, BUSY_TIME always used to be slighly higher than CPU_TIME, which I think is the expected behaviour:

https://mariadb.com/docs/server/server-management/variables-and-modes/server-status-variables#cpu_time

"Busy_time
Description: Cumulative time in seconds of activity on connections. Part of User Statistics. Requires the userstat system variable to be set in order to be recorded.
Scope: Global
Data Type: numeric

Description: Total CPU time used. Part of User Statistics. Requires the userstat system variable to be set in order to be recorded.
Scope: Global, Session
Data Type: numeric

I have confirmed this on multiple environments and setups, including Almalinux 8 and Debian 11. The results are always the same, regardless of the configuration in use. I'm using this simple query to test:

MariaDB [(none)]> SELECT BENCHMARK(50000000, MD5('cpu_test'));

+--------------------------------------+

| BENCHMARK(50000000, MD5('cpu_test')) |

+--------------------------------------+

|                                    0 |

+--------------------------------------+

1 row in set (11.693 sec)

In the example above, the query finished for 11.693 seconds. However, the recorded CPU_TIME for this query is 116.220914, while BUSY_TIME is 11.693639.

I couldn't find anything related in the changelog, nor in the documentation.