simple insertions 36X slower than MYISAM for COLUMNSTORE tables

My 'torture' test inserts 48 rows into a table.

Here is an example insert (note that warnings are expected):
MariaDB [test]> INSERT INTO fact VALUES ('1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345','1978-04-30 2:22:00.12345');
Query OK, 1 row affected, 26 warnings (0.30 sec)

Inserting the 48 rows in MyISAM takes .328s

The same exact test on columnstore takes 13 seconds