timestamp selected from CTE that uses a columnstore join intermitantly returns zero date

Current:
as a user selecting a timestamp from a CTE, which is composed of an innodb table and a columnstore table joined together, the resulting select data yields a zero date stamp intermittently.

Expectation:
as a user selecting a timestamp from a CTE, which is composed of an innodb table and a columnstore table joined together, the resulting select data should include a valid timestamp.

Notes
Attached is a schema setup query that includes some clear sample data. The second file is my sample query that reproduces the bug. As a user, I can execute the select used for the CTE without issue. As a user executing the select from the cte, I get the bad data out on and off.

Im also attaching timestamped screenshots showing where the query results are with timestamp and then immediately show the zero timestamp. Mariadb version and columnstore version noted.

Please let me know if you need additional details.

Best,
George