Double registration when using select into

SQL Server 2019 CU15, Database Audit:

When auditing a SELECT on a database, everything looks fine,but if I SELECT INTO a #myTempDB, I get double registration in the AUDIT LOG.

I created a test database for this purpose, and configured database auditing to monitor SELECT on my test database.

USE [master]GODrop database if exists [AuditTestDatabase];Create Database [AuditTestDatabase];Use [AuditTestDatabase]goCreate Table AuditAuditTest (N integer)insert into AuditAuditTest (N) Values(1)Select * From AuditAuditTest Create Audit output specification (server audit)(Create the Audit in your Temp)Use [master]If exists (SELECT 1 FROM sys.server_audits where name='AuditFiles')Begin  ALTER SERVER AUDIT [AuditFiles] WITH (STATE = OFF);  DROP SERVER AUDIT [AuditFiles];EndGoCREATE SERVER AUDIT [AuditFiles]TO FILE (           FILEPATH = N'C:\Temp\Audit\'            ,MAXSIZE = 10 MB        ,MAX_ROLLOVER_FILES = 2147483647        ,RESERVE_DISK_SPACE = OFF) WITH (QUEUE_DELAY = 1000, ON_FAILURE = CONTINUE, AUDIT_GUID = 'b630ef61-59c4-4318-83db-eee587c89fbe')ALTER SERVER AUDIT [AuditFiles] WITH (STATE = ON)GOCreate Database AuditUSE [AuditTestDatabase]GOIf exists (SELECT 1 FROM sys.database_audit_specifications where name='DatabaseAuditSpecification')Begin  ALTER DATABASE AUDIT SPECIFICATION [DatabaseAuditSpecification] WITH (STATE = OFF);  DROP DATABASE AUDIT SPECIFICATION [DatabaseAuditSpecification];EndGoCREATE DATABASE AUDIT SPECIFICATION [DatabaseAuditSpecification]FOR SERVER AUDIT [AuditFiles]ADD (SELECT ON DATABASE::[AuditTestDatabase] BY [public])WITH (STATE = ON)GO

Auditing is now running.

This can be verified by opening the Audit folder, where there should be one, and only one, sqlaudit file.

Viewing Audit Logs from SSMS

At this point, it only has information that auditing has started.

Next, I try this

Select * From [AuditTestDatabase].dbo.AuditAuditTest

As expected, the SELECT is now in the audit log

Next, I try

Select * Into #L From [AuditTestDatabase].dbo.AuditAuditTestDrop Table #L

And take another look at Audit log.

The SELECT is now present 3 times, this happens every time I select into a temp table.

Is this a bug, or is there something I don’t see?