MariaDB Columnstore: Views with null-replaced timestamps yield incorrect query results

We plan to store null in the timestamps, and use a Pentaho-specific view to null-replace them.

When trying this out, we found (again) a discrepancy between InnoDB and Columnstore:
what should work (and does in InnoDB) yields incorrect query results in Columnstore.

In detail: using YEAR(...) = 1970 in a WHERE condition on a null-replaced date yields no rows in case of Columstore-tables-based view, but the correct result set when the view is based on a InnoDB table.
See the attached SQL.