CREATE TABLE AS SELECT ST_collect ... does not work

MariaDB [test]>  SELECT  (ST_collect(( POINTFROMTEXT(' POINT( 4 1 ) ') ))  )  a  ;

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

| a                                  |

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

|                    @      �?  |

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

1 row in set (0,001 sec)

MariaDB [test]> create table tb1 as SELECT  (ST_collect(( POINTFROMTEXT(' POINT( 4 1 ) ') ))  )  a  ;

ERROR 1406 (22001): Data too long for column 'a' at row 1