LOCK TABLE fails with irrelevant error while working with tables affected by ANSI_QUOTES

--source include/have_partition.inc

SET sql_mode='ANSI_QUOTES';

CREATE TABLE t1 (i INT) 

PARTITION BY RANGE (i)

(PARTITION flush VALUES LESS THAN MAXVALUE);

CREATE TABLE t2 LIKE t1;

SET @@SQL_MODE='';

LOCK TABLES `t1` READ LOCAL,`t2` READ LOCAL;

MariaDB [test]> LOCK TABLES `t1` READ LOCAL,`t2` READ LOCAL;

ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '"flush" VALUES LESS THAN MAXVALUE ENGINE = InnoDB)' at line 2